All Exams >
Class 10 >
Online MCQ Tests for Class 10 >
All Questions
All questions of Control and Coordination for Class 10 Exam
How many lobes are present in cerebellum :-- a)1
- b)3
- c)5
- d)7
Correct answer is option 'B'. Can you explain this answer?
How many lobes are present in cerebellum :-
a)
1
b)
3
c)
5
d)
7
|
Pooja Shah answered |
Anatomical Lobes
There are three anatomical lobes that can be distinguished in the cerebellum; the anterior lobe, the posterior lobe and the flocculonodular lobe. These lobes are divided by two fissures – the primary fissure and posterolateral fissure.
Why are reflex arc connections between input and output nerve made at spinal cord?- a)Because brain is involved in complex thinking
- b)Because brain does not respond fast enough
- c)Because spinal cord is the point where they first meet each other
- d)Because making them in brain will decrease the time of response
Correct answer is option 'C'. Can you explain this answer?
Why are reflex arc connections between input and output nerve made at spinal cord?
a)
Because brain is involved in complex thinking
b)
Because brain does not respond fast enough
c)
Because spinal cord is the point where they first meet each other
d)
Because making them in brain will decrease the time of response
|
Smita mehta answered |
When we touch any hot object without knowing it is hot, we immediately throughout the object to safe our hand from burning. We have a sensory nerve in our brain to detect the heat. The nerves that are connected to the muscles of the hand are also connected with the sensory nerves. This connection of detecting the signal from the nerves to the muscles for immediate action is called Reflex Arc.
Instant and automatic responses are possible by Reflex Arc. The connection between input and output nerves are connected by Reflex Arc and meets in a bundle in the spinal chord. All the nerves on their way to brain meet in a bundle in the spinal chord to send the information to the brain.
Chemical transmission of nerve impulses from one neuron to another at a synapse is by :-- a)Cholesterol
- b)Acetylcholine
- c)Cholecystokinin
- d)ATP
Correct answer is option 'B'. Can you explain this answer?
Chemical transmission of nerve impulses from one neuron to another at a synapse is by :-
a)
Cholesterol
b)
Acetylcholine
c)
Cholecystokinin
d)
ATP
|
Krishna Iyer answered |
The distal end of the axon terminals have swollen ends to form “ bulbs” which store chemicals called neurotransmitters. These are responsible for passing the impulse from one neuron to another or from a neuron to a tissue. (Acetylcholine is an important neurotransmitter.)
Inter neuron junction where neurotransmitters are released- a)cell body
- b)axon
- c)dendrite
- d)synapse
Correct answer is option 'D'. Can you explain this answer?
Inter neuron junction where neurotransmitters are released
a)
cell body
b)
axon
c)
dendrite
d)
synapse
|
|
Krishna Iyer answered |
Neuromuscular junctions are between axon ending and muscles and junction between axon ending of one neuron and dendrites of another neuron is termed synapse.
Which of the following is not associated with growth of plant?
- a)Auxin
- b)Gibberellins
- c)Cytokinins
- d)Abscisic acid
Correct answer is option 'D'. Can you explain this answer?
Which of the following is not associated with growth of plant?
a)
Auxin
b)
Gibberellins
c)
Cytokinins
d)
Abscisic acid
|
Ananya Das answered |
Abscisic acid is generally associated with inhibiting growth, inducing dormancy, and helping the plant to withstand stress conditions such as drought. It is often referred to as a stress hormone or a growth inhibitor in plants, rather than a promoter of growth. On the other hand, auxins, gibberellins, and cytokinins are hormones that promote various aspects of plant growth and development.
Which of the following acts as both endocrine and exocrine glands?- a)Adrenal
- b)Pituitary
- c)Ovaries
- d)Pancreas
Correct answer is option 'D'. Can you explain this answer?
Which of the following acts as both endocrine and exocrine glands?
a)
Adrenal
b)
Pituitary
c)
Ovaries
d)
Pancreas
|
|
Ananya Das answered |
Pancreas are both exocrine and endocrine glands ; they are exocrine glands because they secrete products - pancreatic juice and endocrine because they secrete other substances directly into the blood stream.
The part of a neuron where information is acquired is:- a)Axon
- b)Cell body
- c)Dendritic tip
- d)Nucleus
Correct answer is 'C'. Can you explain this answer?
The part of a neuron where information is acquired is:
a)
Axon
b)
Cell body
c)
Dendritic tip
d)
Nucleus
|
|
Anjana Khatri answered |
The dendritic tip sets off a chemical reaction that creates an electrical impulse.
Which of the following is not a ductless gland?- a)Adrenal
- b)Liver
- c)Thyroid
- d)Pituitary
Correct answer is option 'B'. Can you explain this answer?
Which of the following is not a ductless gland?
a)
Adrenal
b)
Liver
c)
Thyroid
d)
Pituitary
|
|
Priyanshu Intelligent answered |
Glands are the organs of the human body which manufacture some liquid products which are secreted internally or externally from the cells. Mainly there are two types of glands namely ducted glands and ductless glands. Ducted glands secrete their products through well defined ducts like liver, salivary, sweat glands etc. Whereas Ductless glands which are also known as internally secreting glands or endocrine glands secrete their products or hormones directly into the blood stream in response to instructions from the brain. The blood then carries them around the body where they control internal chemical processes. Hence they are linked with the nervous system and also with the circulatory system and their secretions are known as hormones or enzymes. This article deals with the ductless glands, where they are located in the body, secretion and function.
Voluntary activites of body are controlled by :-- a)Diencephalon
- b)Cerebrum
- c)Crura cerebri
- d)Cerebellum
Correct answer is option 'B'. Can you explain this answer?
Voluntary activites of body are controlled by :-
a)
Diencephalon
b)
Cerebrum
c)
Crura cerebri
d)
Cerebellum
|
Mira Sharma answered |
All the body's voluntary actions are controlled by the motor cortex in the frontal lobe of the cerebrum.
Which hormones regulate calcium and phosphorus levels in the body :-- a)Calcitonin and parathormone
- b)Insulin an gulcagon
- c)Oxytocin and vasopessin
- d)Thyroxine and thymosin
Correct answer is option 'A'. Can you explain this answer?
Which hormones regulate calcium and phosphorus levels in the body :-
a)
Calcitonin and parathormone
b)
Insulin an gulcagon
c)
Oxytocin and vasopessin
d)
Thyroxine and thymosin
|
Ritika Choudhury answered |
A hormone called parathyroid hormone regulates the levels of calcium and phosphorus in your blood. When the phosphorus level is measured, a vitamin D level, and sometimes a PTH level, is measured at the same time. Vitamin D is needed for your body to take in phosphate.
Mark the odd one out:- a)Auxin
- b)Abscisic acid
- c)Cytokinin
- d)Gibberellins
Correct answer is option 'B'. Can you explain this answer?
Mark the odd one out:
a)
Auxin
b)
Abscisic acid
c)
Cytokinin
d)
Gibberellins
|
|
Harshit Agrawal answered |
Correct option is B as auxin , cytokinin and gibberellins are growth promoting plant hormones while Abscisic acid is the growth inhibitior plant hormone.
Olfactoreceptors help to respond to :-- a)Sound
- b)Touch
- c)Smell
- d)Taste
Correct answer is option 'C'. Can you explain this answer?
Olfactoreceptors help to respond to :-
a)
Sound
b)
Touch
c)
Smell
d)
Taste
|
Mansi Choudhary answered |
Olfactory means related to smell hence olfactor receptors help to respond to smell.
What causes the tendril of a pea plant to circle around an object it touches?
- a)Rapid growth on the side touching the object
- b)Inhibition of growth on the side touching the object
- c)Electrical impulses
- d)Hormonal secretions
Correct answer is option 'B'. Can you explain this answer?
What causes the tendril of a pea plant to circle around an object it touches?
a)
Rapid growth on the side touching the object
b)
Inhibition of growth on the side touching the object
c)
Electrical impulses
d)
Hormonal secretions
|
Harshad Majumdar answered |
- Tendrils are sensitive in nature.
- They mainly respond to touch by growing and winding around the object.
- The coiling mechanism occurs when the part of the tendril which touches the object stops growing.
- Thus, the remaining part grows faster because of the plant hormone auxin which cause the coiling effect.
- Auxin stimulates cell growth on the opposite side so that the coil forms rapidly.
- The coiled portion of the tendrils is later concentrated with sclerenchyma cells to provide rigidity.
- The twining tendency of the tendril causes it to encircle or coil around the object it comes in contact with.
Which of the following hormone known as anti-abortion hormone ?- a)Oxytocin
- b)Estrogen
- c)Progesterone
- d)Testosterone
Correct answer is option 'C'. Can you explain this answer?
Which of the following hormone known as anti-abortion hormone ?
a)
Oxytocin
b)
Estrogen
c)
Progesterone
d)
Testosterone
|
Vivek Rana answered |
Progesterone is an anti abortion hormone.
It is mainly secreted by the corpus luteum in the ovary during the second half of the menstrual cycle. It plays important roles in the menstrual cycle and in maintaining the early stages of pregnancy. Hence, progesterone is called as the " Anti-national abortion hormone ".
It is mainly secreted by the corpus luteum in the ovary during the second half of the menstrual cycle. It plays important roles in the menstrual cycle and in maintaining the early stages of pregnancy. Hence, progesterone is called as the " Anti-national abortion hormone ".
Cerebral hemispheres are the centres of :-- a)Balance
- b)Smell
- c)Taste
- d)Thinking
Correct answer is option 'D'. Can you explain this answer?
Cerebral hemispheres are the centres of :-
a)
Balance
b)
Smell
c)
Taste
d)
Thinking
|
|
Amit Sharma answered |
Cerebral is centre of thinking, will power, reasoning and memory, experience and learning knowledge and articulate speech.
Involuntary actions in the body are controlled by- a)medulla in forebrain
- b)medulla in midbrain
- c)medulla in hindbrain
- d)medulla in spinal cord
Correct answer is option 'C'. Can you explain this answer?
Involuntary actions in the body are controlled by
a)
medulla in forebrain
b)
medulla in midbrain
c)
medulla in hindbrain
d)
medulla in spinal cord
|
|
Kuldeep Raj answered |
Yeah friend, option (c) Medulla in hind brain is correct friend. Because, the Medulla oblongata is a part of hind brain and its main function is to control involuntary actions in the body.
Medulla oblongata's main function in controlling involuntary actions in the body are:-
* Peristalsis.
* vOmiting.
* Secretion.
* Enzymes.
* Breathing.
*Blood pressure.
* HEart beat.
Tricks to learn the function of Medulla oblongata is,
"POSE B HE " (पोज भी है।). Here, Pose means "Style" B means "Also" HE means "There".
So, In English, "Style also there", where,
P - Peristalsis,
O - vOmiting,
S - Secretion,
E - Enzymes,
B - Breathing, Blood pressure,
HE - HEart beat.
Hope you have understand friend..
Medulla oblongata's main function in controlling involuntary actions in the body are:-
* Peristalsis.
* vOmiting.
* Secretion.
* Enzymes.
* Breathing.
*Blood pressure.
* HEart beat.
Tricks to learn the function of Medulla oblongata is,
"POSE B HE " (पोज भी है।). Here, Pose means "Style" B means "Also" HE means "There".
So, In English, "Style also there", where,
P - Peristalsis,
O - vOmiting,
S - Secretion,
E - Enzymes,
B - Breathing, Blood pressure,
HE - HEart beat.
Hope you have understand friend..
The neurons that carry nerve impulse from spinal cord to effectors are called :-- a)Sensory neurons
- b)Motor neurons
- c)Interneurons
- d)Spinal neurons
Correct answer is option 'B'. Can you explain this answer?
The neurons that carry nerve impulse from spinal cord to effectors are called :-
a)
Sensory neurons
b)
Motor neurons
c)
Interneurons
d)
Spinal neurons
|
|
Krishna Iyer answered |
Motor Neurons- Motor neurons carry impulses from the CNS to effector organs Motor neurons are also called efferent neurons. The cell bodies of motor neurons are inside the CNS.
Name the hormone which controls basal metabolic rate in animals :-- a)Adrenaline
- b)Thymosin
- c)Oxytocin
- d)Thyroxine
Correct answer is option 'D'. Can you explain this answer?
Name the hormone which controls basal metabolic rate in animals :-
a)
Adrenaline
b)
Thymosin
c)
Oxytocin
d)
Thyroxine
|
|
Pooja Shah answered |
The basal metabolic rate, which is the amount of calories required by the body at rest, is determined by two hormones produced by the thyroid gland :- thyroxine.
Number of cranial nerves in human :-- a)12
- b)24
- c)11
- d)29
Correct answer is option 'A'. Can you explain this answer?
Number of cranial nerves in human :-
a)
12
b)
24
c)
11
d)
29
|
|
Anjana Khatri answered |
There are 12 pairs of Carnial nerves.
Cranial nerves are the nerves that emerge directly from the brain (including the brainstem), in contrast to spinal nerves (which emerge from segments of the spinal cord). 10 of 12 of the cranial nerves originate in the brainstem. Cranial nerves relay information between the brain and parts of the body, primarily to and from regions of the head and neck.
The cerebellum is concerned with :-
- a)Preception
- b)Vision
- c)Coordinate and movement
- d)Memory
Correct answer is option 'C'. Can you explain this answer?
The cerebellum is concerned with :-
a)
Preception
b)
Vision
c)
Coordinate and movement
d)
Memory
|
|
Ananya Das answered |
The cerebellum is located behind the brain stem. While the frontal lobe controls movement, the cerebellum " fine - tunes " this movement. This area of the brain is responsible for fine motor movement, balance and thr brain's ability to determine limb position.
Hyposecretion of thyroxine in children causes :-- a)Dwarfism
- b)Gigantism
- c)Acromegly
- d)Cretinism
Correct answer is option 'D'. Can you explain this answer?
Hyposecretion of thyroxine in children causes :-
a)
Dwarfism
b)
Gigantism
c)
Acromegly
d)
Cretinism
|
|
Vikas Kumar answered |
Cretinism is a condition of severely stunted physical and mental growth owing to untreated congenital deficiency of thyroid hormone (congenital hypothyroidism) usually owing to maternal hypothyroidism.
MCQ (Multiple Choice Questions) or Practice Quiz with solutions of Chapter - "Control and Coordination" of Class 10 Science, the questions are available for practice Q. Which one of the endocrine glands is known as master gland ?- a)Pituitary
- b)Adrenal
- c)Thyroid
- d)Parathyroid
Correct answer is 'A'. Can you explain this answer?
MCQ (Multiple Choice Questions) or Practice Quiz with solutions of Chapter - "Control and Coordination" of Class 10 Science, the questions are available for practice
Q. Which one of the endocrine glands is known as master gland ?
a)
Pituitary
b)
Adrenal
c)
Thyroid
d)
Parathyroid
|
|
Animesh prakash answered |
Pituitary gland as the master gland
The pituitary gland is called the "master gland" because it controls the functions of other endocrine glands in the body. It is a small gland located at the base of the brain and is connected to the hypothalamus by a stalk-like structure called the infundibulum.
Functions of the pituitary gland
The pituitary gland secretes hormones that regulate many bodily functions, including growth and development, reproduction, metabolism, and water balance. It is divided into two parts: the anterior pituitary and the posterior pituitary.
Anterior pituitary hormones
The anterior pituitary produces and secretes several hormones, including:
1. Growth hormone (GH): promotes growth and development of bone, muscle, and other tissues.
2. Prolactin (PRL): stimulates milk production in the mammary glands.
3. Follicle-stimulating hormone (FSH): stimulates the growth and development of ovarian follicles in females and the production of sperm in males.
4. Luteinizing hormone (LH): stimulates ovulation in females and the production of testosterone in males.
5. Adrenocorticotropic hormone (ACTH): stimulates the production of cortisol by the adrenal glands.
6. Thyroid-stimulating hormone (TSH): stimulates the production of thyroid hormones by the thyroid gland.
Posterior pituitary hormones
The posterior pituitary stores and releases two hormones produced by the hypothalamus:
1. Oxytocin: stimulates uterine contractions during childbirth and milk ejection during breastfeeding.
2. Antidiuretic hormone (ADH): regulates water balance by increasing water reabsorption in the kidneys.
Conclusion
In summary, the pituitary gland is called the "master gland" because it controls the functions of other endocrine glands in the body. It secretes hormones that regulate many bodily functions, including growth and development, reproduction, metabolism, and water balance. The anterior pituitary produces and secretes several hormones, while the posterior pituitary stores and releases two hormones produced by the hypothalamus.
The pituitary gland is called the "master gland" because it controls the functions of other endocrine glands in the body. It is a small gland located at the base of the brain and is connected to the hypothalamus by a stalk-like structure called the infundibulum.
Functions of the pituitary gland
The pituitary gland secretes hormones that regulate many bodily functions, including growth and development, reproduction, metabolism, and water balance. It is divided into two parts: the anterior pituitary and the posterior pituitary.
Anterior pituitary hormones
The anterior pituitary produces and secretes several hormones, including:
1. Growth hormone (GH): promotes growth and development of bone, muscle, and other tissues.
2. Prolactin (PRL): stimulates milk production in the mammary glands.
3. Follicle-stimulating hormone (FSH): stimulates the growth and development of ovarian follicles in females and the production of sperm in males.
4. Luteinizing hormone (LH): stimulates ovulation in females and the production of testosterone in males.
5. Adrenocorticotropic hormone (ACTH): stimulates the production of cortisol by the adrenal glands.
6. Thyroid-stimulating hormone (TSH): stimulates the production of thyroid hormones by the thyroid gland.
Posterior pituitary hormones
The posterior pituitary stores and releases two hormones produced by the hypothalamus:
1. Oxytocin: stimulates uterine contractions during childbirth and milk ejection during breastfeeding.
2. Antidiuretic hormone (ADH): regulates water balance by increasing water reabsorption in the kidneys.
Conclusion
In summary, the pituitary gland is called the "master gland" because it controls the functions of other endocrine glands in the body. It secretes hormones that regulate many bodily functions, including growth and development, reproduction, metabolism, and water balance. The anterior pituitary produces and secretes several hormones, while the posterior pituitary stores and releases two hormones produced by the hypothalamus.
Artificial ripening of fruits is carried out by- a)Auxin
- b)Cytokinin
- c)Ethylene
- d)Gibberellin
Correct answer is option 'C'. Can you explain this answer?
Artificial ripening of fruits is carried out by
a)
Auxin
b)
Cytokinin
c)
Ethylene
d)
Gibberellin
|
|
♥️ answered |
Ethylene is highly effective in fruit ripening ,it enhances the respiration rate during ripening of fruits !!!
The term 'hormone' was coined by :-- a)Yabuta
- b)Went
- c)Starling
- d)Wilson
Correct answer is option 'C'. Can you explain this answer?
The term 'hormone' was coined by :-
a)
Yabuta
b)
Went
c)
Starling
d)
Wilson
|
|
Amit Sharma answered |
Hormone, secretin: Hormone made by glands in the small intestine that stimulates pancreatic secretion. The word "hormone" was coined by the English physiologists Wm. M. Bayliss and Ernest H. Starling in connection with their discovery of secretin, the first hormone, in 1902.
Match the following-
Column I Column II
1. Hormones i) Shoot
2. Seedling germination ii) growth of pollen tubes towards ovules
3. Chemotropic iii) Root
4. Positively geotropic iv) synthesized at places away from where they act
5. Positively phototropic v) growth- a)1 – iv; 2 – v; 3 – ii; 4 – iii; 5 – i
- b)1 – v; 2 – iv; 3 – ii; 4 – iii; 5 – i
- c)1- iv; 2 – iii; 3 – iv; 4 – ii; 5 – i
- d)1 – iv; 2 – v; 3 – iii; 4 – ii; 5 – i
Correct answer is option 'A'. Can you explain this answer?
Match the following-
Column I Column II
1. Hormones i) Shoot
2. Seedling germination ii) growth of pollen tubes towards ovules
3. Chemotropic iii) Root
4. Positively geotropic iv) synthesized at places away from where they act
5. Positively phototropic v) growth
Column I Column II
1. Hormones i) Shoot
2. Seedling germination ii) growth of pollen tubes towards ovules
3. Chemotropic iii) Root
4. Positively geotropic iv) synthesized at places away from where they act
5. Positively phototropic v) growth
a)
1 – iv; 2 – v; 3 – ii; 4 – iii; 5 – i
b)
1 – v; 2 – iv; 3 – ii; 4 – iii; 5 – i
c)
1- iv; 2 – iii; 3 – iv; 4 – ii; 5 – i
d)
1 – iv; 2 – v; 3 – iii; 4 – ii; 5 – i
|
|
Amit Sharma answered |
Hormones synthesized at places away from where they act. Growth is seedling germination. Chemotropic is the growth of pollen tubes towards ovules. Root is positively geotrophic. Shoot is positively phototropic.
In a neuron, conversion of electrical signal to a chemical signal occurs at/ in- a)axon
- b)dendrite end
- c)synapse
- d)cyton or cell body
Correct answer is option 'C'. Can you explain this answer?
In a neuron, conversion of electrical signal to a chemical signal occurs at/ in
a)
axon
b)
dendrite end
c)
synapse
d)
cyton or cell body
|
Gaurav Kumar answered |
When the electrical impulse reaches the axon ending at synapse chemicals are released which on reaching the dendrite of next neuron again give rise to electrical impulse.
Which of the following statements is not true about thyroid gland ?- a)It is located in the neck region
- b)Iron is essential for the synthesis of thyroxine
- c)Its secretion regulate metabolism of fat, protein and carbohydrates
- d)Less secretion of thyroid hormone in children causes stunted growth (cretinism)
Correct answer is option 'B'. Can you explain this answer?
Which of the following statements is not true about thyroid gland ?
a)
It is located in the neck region
b)
Iron is essential for the synthesis of thyroxine
c)
Its secretion regulate metabolism of fat, protein and carbohydrates
d)
Less secretion of thyroid hormone in children causes stunted growth (cretinism)
|
|
Krishna Iyer answered |
For secretion of thyroid, iodine is essential and not iron.
Which gland is lost as age advances ?- a)Thyroid
- b)Thymus
- c)Adrenal
- d)Pituitary
Correct answer is option 'B'. Can you explain this answer?
Which gland is lost as age advances ?
a)
Thyroid
b)
Thymus
c)
Adrenal
d)
Pituitary
|
|
Sanvi Kapoor answered |
The correct answer is B as shrinkage of thymus mainly takes place due to a high level of sex hormones.
Corpus callosum connects :-- a)Two cerebral hemispheres
- b)Two optic lobes
- c)Two olfactory lobes
- d)Optic chiasma
Correct answer is option 'A'. Can you explain this answer?
Corpus callosum connects :-
a)
Two cerebral hemispheres
b)
Two optic lobes
c)
Two olfactory lobes
d)
Optic chiasma
|
Anjana Bajaj answered |
The cerebral hemisphere are separated from olfactory lobes by rhinal fissure. The median fissure divides the cerebrum into a right and a left cerebral hemisphere. ... Two cerebral hemispheres are interconnected by thick band of transverse nerve fibres of white matter called corpus callosum.
Which of the following gland has both exocrine and endocrine parts :-- a)Thyroid
- b)Pituitary
- c)Adrenal
- d)None of these
Correct answer is option 'D'. Can you explain this answer?
Which of the following gland has both exocrine and endocrine parts :-
a)
Thyroid
b)
Pituitary
c)
Adrenal
d)
None of these
|
|
Krishna Iyer answered |
The liver and pancreas are both exocrine and endocrine glands; they are exocrine glands because they secrete products—bile and pancreatic juice—into the gastrointestinal tract through a series of ducts, and endocrine because they secrete other substances directly into the bloodstream.
Power of regeneration is lowest in :-- a)Brain cell
- b)Liver cell
- c)Bone cell
- d)Muscle cell
Correct answer is option 'A'. Can you explain this answer?
Power of regeneration is lowest in :-
a)
Brain cell
b)
Liver cell
c)
Bone cell
d)
Muscle cell
|
|
Gaurav Kumar answered |
Brain cells remain in the beginning stage of interphase of cell reproduction for their life and never divide and instead develop by forming new synapses with other neurons. They lack cellular machinery for cell division.
Sweat glands, salivary glands and gastric glands are the examples of :-- a)Heterocrine glands
- b)Endocrine glands
- c)Both Endocrine and exocrine glands
- d)Exocrine glands
Correct answer is option 'D'. Can you explain this answer?
Sweat glands, salivary glands and gastric glands are the examples of :-
a)
Heterocrine glands
b)
Endocrine glands
c)
Both Endocrine and exocrine glands
d)
Exocrine glands
|
|
Sheetal sharma answered |
Exocrine Glands:
Exocrine glands are the glands that secrete their products outside the body or into the cavities present within the body. Examples of exocrine glands include sweat glands, salivary glands, and gastric glands.
Sweat Glands:
Sweat glands are a type of exocrine gland that secretes sweat onto the surface of the skin. Sweat helps in regulating the body temperature.
Salivary Glands:
Salivary glands are also a type of exocrine gland that secretes saliva into the mouth. Saliva helps in the digestion of food by breaking down the starch into simple sugars.
Gastric Glands:
Gastric glands are another type of exocrine gland that secretes gastric juice into the stomach. Gastric juice contains hydrochloric acid and enzymes that help in the digestion of food.
Conclusion:
Thus, the correct option is D, which states that sweat glands, salivary glands, and gastric glands are examples of exocrine glands.
Exocrine glands are the glands that secrete their products outside the body or into the cavities present within the body. Examples of exocrine glands include sweat glands, salivary glands, and gastric glands.
Sweat Glands:
Sweat glands are a type of exocrine gland that secretes sweat onto the surface of the skin. Sweat helps in regulating the body temperature.
Salivary Glands:
Salivary glands are also a type of exocrine gland that secretes saliva into the mouth. Saliva helps in the digestion of food by breaking down the starch into simple sugars.
Gastric Glands:
Gastric glands are another type of exocrine gland that secretes gastric juice into the stomach. Gastric juice contains hydrochloric acid and enzymes that help in the digestion of food.
Conclusion:
Thus, the correct option is D, which states that sweat glands, salivary glands, and gastric glands are examples of exocrine glands.
Which part of the nervous system controls the reflex activities of the body?- a)Brain
- b)Spinal cord
- c)Cerebrum
- d)Cerebellum
Correct answer is option 'B'. Can you explain this answer?
Which part of the nervous system controls the reflex activities of the body?
a)
Brain
b)
Spinal cord
c)
Cerebrum
d)
Cerebellum
|
EduRev Class 10 answered |
Reflex activities are automatic responses to stimuli that are primarily controlled by the spinal cord, allowing for quick reactions without involving the brain. The brain is responsible for voluntary actions and higher cognitive functions, while the cerebrum and cerebellum handle functions related to movement, balance, and complex thought processes. Reflex actions bypass the brain to save time, which is why the spinal cord is the correct answer.
Junction of two neurons is called :-- a)Synapse
- b)Synapsis
- c)Joint
- d)Junction
Correct answer is option 'A'. Can you explain this answer?
Junction of two neurons is called :-
a)
Synapse
b)
Synapsis
c)
Joint
d)
Junction
|
|
Raghav Bansal answered |
Synapse, also called Neuronal junction, the site of transmission of electric nerve impulses between two nerve cells or between a neuron and a gland or muscle cell.
Injecting a tadpole with thyroxine would lead to :-- a)giant but normal tadpoles
- b)precocious metamorphosis
- c)stoppage of metamorphosis
- d)atrophy of gonads
Correct answer is option 'B'. Can you explain this answer?
Injecting a tadpole with thyroxine would lead to :-
a)
giant but normal tadpoles
b)
precocious metamorphosis
c)
stoppage of metamorphosis
d)
atrophy of gonads
|
|
Ananya Das answered |
In frogs, growth and metamorphosis is regulated by Thyroxine gland. Thyroxine is secreted from thyroid gland. It stimulates the consumption of oxygen by metabolically active tissues and also increases the oxidation of glucose in tissues. Hence, tadpoles will undergo metamorphosis if they are injected with thyroxine.
The main effect of cytokinin in plants is to- a)improve the quality of fruits
- b)prevent the growth of lateral buds
- c)regulate opening and closing of stomata
- d)stimulate cell division
- e)increase the length of internodes on flowering stems
Correct answer is option 'D'. Can you explain this answer?
The main effect of cytokinin in plants is to
a)
improve the quality of fruits
b)
prevent the growth of lateral buds
c)
regulate opening and closing of stomata
d)
stimulate cell division
e)
increase the length of internodes on flowering stems
|
|
Manish Singh answered |
Cytokinins (CK) are a class of plant growth substances (phytohormones) that promote cell division, or cytokinesis, in plant roots and shoots. They are involved primarily in cell growth and differentiation, but also affect apical dominance, axillary bud growth, and leaf senescence.
Ageing in human beings is caused by disappearance of which of the following glands?- a)Adrenal
- b)Pituitary
- c)Thyroid
- d)Thymus
Correct answer is option 'D'. Can you explain this answer?
Ageing in human beings is caused by disappearance of which of the following glands?
a)
Adrenal
b)
Pituitary
c)
Thyroid
d)
Thymus
|
|
Krishna Iyer answered |
The correct answer is d
According to immunity theory, ageing is associated with the disappearance of the thymus gland by the late middle age in man and replaced by fat. It causes a weakening in the defense mechanisms of the body and in the course of time, leads to a large-scale decay and destruction of cells and tissues.
Which hormone regulates the ionic balance in the body?- a)Glucagon
- b)Thyroxine
- c)Testosterone
- d)Vasopressin
Correct answer is option 'D'. Can you explain this answer?
Which hormone regulates the ionic balance in the body?
a)
Glucagon
b)
Thyroxine
c)
Testosterone
d)
Vasopressin
|
|
Khushi Pandey answered |
Vasopressin is a neurohypophysial hormone. It's two primary functions are to retain water in the body and to constrict blood vessels. Vasopressin regulates the body's retention of water by acting to increase water reabsorption in the kidney's collecting ducts, the tubules which receive the very dilute urine produced by the functional unit of the kidney, the nephrons.
It plays a key role in homeostasis, by the regulation of water, glucose and salts in the blood.
It plays a key role in homeostasis, by the regulation of water, glucose and salts in the blood.
How do plants respond to gravity?
- a)By growing towards and away from it
- b)By growing away from it
- c)By folding up and drooping
- d)By generating electrical impulses
Correct answer is option 'A'. Can you explain this answer?
How do plants respond to gravity?
a)
By growing towards and away from it
b)
By growing away from it
c)
By folding up and drooping
d)
By generating electrical impulses
|
|
Smita nair answered |
Response:
How do plants respond to gravity?
Plants respond to gravity by growing towards it, which is known as gravitropism. This phenomenon allows plants to sense the direction of gravity and adjust their growth accordingly.
Gravitropism:
- Gravitropism is a plant's growth response to gravity.
- Roots exhibit positive gravitropism, growing towards the force of gravity to anchor the plant and absorb water and nutrients.
- Stems exhibit negative gravitropism, growing away from the force of gravity to reach sunlight for photosynthesis.
Mechanism of gravitropism:
- Plants have specialized cells called statocytes that contain starch-filled organelles called statoliths.
- When a plant is upright, the statoliths settle at the bottom of the cell due to gravity.
- This triggers a signal cascade that leads to differential growth on the upper and lower sides of the plant, causing it to bend towards gravity (roots) or away from gravity (stems).
Experimental evidence:
- Experiments involving rotating plants have shown that altering the direction of gravity changes the growth pattern of roots and stems.
- Plants grown in microgravity conditions, such as in space, exhibit altered growth patterns due to the absence of a consistent gravitational force.
Conclusion:
Plants respond to gravity by growing towards it, a process known as gravitropism. This adaptive mechanism allows plants to optimize their growth and development in relation to the force of gravity, ensuring their survival and success in various environments.
Largest cavity in brain is called :-- a)Diocoel
- b)Paracoel
- c)Metacoel
- d)Rhinocoel
Correct answer is option 'B'. Can you explain this answer?
Largest cavity in brain is called :-
a)
Diocoel
b)
Paracoel
c)
Metacoel
d)
Rhinocoel
|
Amar agrawal answered |
The four cavities of the human brain are called as ventricles. The two largest are the lateral ventricles in the cerebrum. These first and second ventricles present in two cerebral hemispheres is called as the paracoel.
Non Myelinated axons differ from myelinated in that they :-- a)Are more excitable
- b)Lack nodes of Ranvier
- c)Are not capable of regeneration
- d)Are not associated with Schwann cells
Correct answer is option 'B'. Can you explain this answer?
Non Myelinated axons differ from myelinated in that they :-
a)
Are more excitable
b)
Lack nodes of Ranvier
c)
Are not capable of regeneration
d)
Are not associated with Schwann cells
|
Anshu Shah answered |
Myelinated and unmyelinated nerve fibers are the two forms of nerve fibers that are found in the nervous system. The main difference between myelinated and unmyelinated nerve fibers is that myelinated nerve fibers contain a myelin insulation whereas unmyelinated nerve fibers do not contain a myeline insulation.
Addison's disease is caused by :-- a)hyposecretion of parathormone
- b)hypersecretion of corticoids
- c)hyposecretion of corticoids
- d)hypersecretion of insulin
Correct answer is option 'C'. Can you explain this answer?
Addison's disease is caused by :-
a)
hyposecretion of parathormone
b)
hypersecretion of corticoids
c)
hyposecretion of corticoids
d)
hypersecretion of insulin
|
Nandita Pillai answered |
The correct option is C.
Hyposecretion of the glucocorticoid hormone cortisol leads to a disorder called Addison's disease. There may also be hyposecretion of mineralocorticoids with this disorder.
Hyposecretion of the glucocorticoid hormone cortisol leads to a disorder called Addison's disease. There may also be hyposecretion of mineralocorticoids with this disorder.
Proprioceptors are :-- a)meant for detecting pressure in the skin
- b)for magnifying sound in the internal ear
- c)internal sense organs which occur most frequently in muscles
- d)for the detection of direction of waves in fishes
Correct answer is option 'C'. Can you explain this answer?
Proprioceptors are :-
a)
meant for detecting pressure in the skin
b)
for magnifying sound in the internal ear
c)
internal sense organs which occur most frequently in muscles
d)
for the detection of direction of waves in fishes
|
|
Preethi Ahuja answered |
Proprioceptors are internal sense organs that occur most frequently in muscles. They play a crucial role in providing information about the position, movement, and tension of our body parts. These sensory receptors are responsible for proprioception, which is our ability to sense and perceive our own body movements and positions without relying on visual or auditory cues.
Proprioceptors in Muscles:
- Proprioceptors are found in various muscles throughout the body. They are particularly abundant in skeletal muscles, which are responsible for voluntary movements. These proprioceptors are specialized sensory receptors that detect changes in muscle length and tension.
- The most important proprioceptors in muscles are the muscle spindles and Golgi tendon organs. Muscle spindles are sensitive to changes in muscle length, while Golgi tendon organs are sensitive to changes in muscle tension.
Function of Proprioceptors:
- Proprioceptors provide continuous feedback to the central nervous system about the position and movement of our body parts. This feedback is essential for maintaining balance, coordination, and posture.
- When a muscle is stretched or contracted, the muscle spindles and Golgi tendon organs send signals to the brain, providing information about the length and tension of the muscle. This information is used by the brain to make adjustments in muscle contraction and relaxation to maintain optimal muscle tone and joint stability.
- Proprioceptors also play a crucial role in reflex actions. For example, the stretch reflex is a protective mechanism that helps to maintain muscle tone and prevent overstretching of muscles.
Importance of Proprioception:
- Proprioception is essential for performing precise and coordinated movements. It allows us to have a sense of where our body parts are in space and helps us perform activities like walking, running, and playing sports.
- Proprioceptive training is often used in rehabilitation settings to improve balance, coordination, and motor control. It can be particularly beneficial for individuals with conditions such as stroke, Parkinson's disease, or musculoskeletal injuries.
In conclusion, proprioceptors are internal sense organs that occur most frequently in muscles. They provide important sensory feedback to the brain about the position, movement, and tension of our body parts. This information is crucial for maintaining balance, coordination, and posture, as well as performing precise and coordinated movements.
Proprioceptors in Muscles:
- Proprioceptors are found in various muscles throughout the body. They are particularly abundant in skeletal muscles, which are responsible for voluntary movements. These proprioceptors are specialized sensory receptors that detect changes in muscle length and tension.
- The most important proprioceptors in muscles are the muscle spindles and Golgi tendon organs. Muscle spindles are sensitive to changes in muscle length, while Golgi tendon organs are sensitive to changes in muscle tension.
Function of Proprioceptors:
- Proprioceptors provide continuous feedback to the central nervous system about the position and movement of our body parts. This feedback is essential for maintaining balance, coordination, and posture.
- When a muscle is stretched or contracted, the muscle spindles and Golgi tendon organs send signals to the brain, providing information about the length and tension of the muscle. This information is used by the brain to make adjustments in muscle contraction and relaxation to maintain optimal muscle tone and joint stability.
- Proprioceptors also play a crucial role in reflex actions. For example, the stretch reflex is a protective mechanism that helps to maintain muscle tone and prevent overstretching of muscles.
Importance of Proprioception:
- Proprioception is essential for performing precise and coordinated movements. It allows us to have a sense of where our body parts are in space and helps us perform activities like walking, running, and playing sports.
- Proprioceptive training is often used in rehabilitation settings to improve balance, coordination, and motor control. It can be particularly beneficial for individuals with conditions such as stroke, Parkinson's disease, or musculoskeletal injuries.
In conclusion, proprioceptors are internal sense organs that occur most frequently in muscles. They provide important sensory feedback to the brain about the position, movement, and tension of our body parts. This information is crucial for maintaining balance, coordination, and posture, as well as performing precise and coordinated movements.
Which part of the nervous system serves as the main coordinating center for receiving information and controlling voluntary actions?- a)Peripheral nervous system
- b)Spinal cord only
- c)Central nervous system
- d)Cranial nerves
Correct answer is option 'C'. Can you explain this answer?
a)
Peripheral nervous system
b)
Spinal cord only
c)
Central nervous system
d)
Cranial nerves
|
Kds Coaching answered |
The central nervous system (CNS), consisting of the brain and spinal cord, is the main coordinating center of the body. It receives information from all parts of the body, integrates it, and sends messages to muscles to control voluntary actions such as writing, talking, and moving. The peripheral nervous system facilitates communication between the CNS and other body parts but does not serve as the main control center.
Identify which of the following statements about thyroxin is incorrect?- a)Thyroid gland requires iodine to synthesize thyroxin.
- b)Thyroxin is also called thyroid hormone.
- c)It regulates protein, carbohydrates and fat metabolism in the body.
- d)Iron is essential for the synthesis of thyroxin.
Correct answer is option 'D'. Can you explain this answer?
Identify which of the following statements about thyroxin is incorrect?
a)
Thyroid gland requires iodine to synthesize thyroxin.
b)
Thyroxin is also called thyroid hormone.
c)
It regulates protein, carbohydrates and fat metabolism in the body.
d)
Iron is essential for the synthesis of thyroxin.
|
Nk Classes answered |
Thyroxin is a crucial hormone produced by the thyroid gland, and understanding its synthesis and function is important. Here are some key points:
- Iodine is essential for the production of thyroxin. Without it, the thyroid cannot synthesise this hormone.
- Thyroxin regulates metabolism of proteins, carbohydrates, and fats in the body, ensuring proper energy balance.
- Deficiency of iodine can lead to conditions such as goitre, which is characterised by a swollen neck.
- Iron is not necessary for the synthesis of thyroxin, making statement D incorrect.
In summary, while iodine is vital for thyroxin production, iron does not play a role in its synthesis.
Gigantism results due to- a)excess secretion of thyroxine
- b)less secretion of thyroxine
- c)excess secretion of growth hormone
- d)less secretion of growth hormone
Correct answer is option 'C'. Can you explain this answer?
Gigantism results due to
a)
excess secretion of thyroxine
b)
less secretion of thyroxine
c)
excess secretion of growth hormone
d)
less secretion of growth hormone
|
Ayush mishra answered |
Excess secretion of growth hormone by pituitary gland causes gigantism while its deficiency causes dwarfism.
Which endocrine gland is also known as ‘master gland’?- a)Pancreas
- b)Adrenal
- c)Pituitary
- d)Hypothalamus
Correct answer is option 'C'. Can you explain this answer?
Which endocrine gland is also known as ‘master gland’?
a)
Pancreas
b)
Adrenal
c)
Pituitary
d)
Hypothalamus
|
Harshita Sharma answered |
Pituitary gland is known as master of gland
Chapter doubts & questions for Control and Coordination - Online MCQ Tests for Class 10 2025 is part of Class 10 exam preparation. The chapters have been prepared according to the Class 10 exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for Class 10 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
Chapter doubts & questions of Control and Coordination - Online MCQ Tests for Class 10 in English & Hindi are available as part of Class 10 exam.
Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up
within 7 days!
within 7 days!
Takes less than 10 seconds to signup