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Class 10 Science Chapter 6 Question Answers - Control and Coordination

Select the Correct Alternative:

Q1. ______ is the complimentary system of nervous system.

  1. Circulatory system
  2. Endocrine system
  3. Lymphatic system
  4. Skeletal system

Q2. Plant hormones are called ______.

  1. hypohormones
  2. metahormones
  3. phytohormones
  4. cytohormones

Q3. The leaves of mimosa are sensitive to ______.

Mimosa PlantMimosa Plant

  1. light
  2. touch
  3. heat
  4. smell

Q4. A sunflower plant bends towards the sun. It is ______ response.

  1. Thigmonastic
  2. seismonastic
  3. thermonastic
  4. photonastic

Q5. All multicellular organisms, except ______, have well-developed nervous system. 

  1. porifera
  2. mammals
  3. arthropoda
  4. insecta

Q6. Nerve mass in invertebrates is called ______.

  1. brain
  2. neuron
  3. ganglion
  4. pelvis

Q7. Hormones are secreted by ______.

  1. endocrine glands
  2. blood
  3. midbrain
  4. liver

Q8. The space between meninges is filled with ______.

  1. lymph
  2. blood plasma
  3. cerebrospinal fluid
  4. ACTH

Q9.______ is not the part of hind brain.

  1. cerebellum
  2. pons
  3. medulla oblongata
  4. cerebrum

Q10.______ protects spinal cord.

  1. Cranium
  2. Vertebral column
  3. Skull
  4. Ribs

Q11.______ pairs of spinal nerves arise from spinal cord.

  1. 21
  2. 31
  3. 32
  4. 42

Q12. Which of the following organs is not controlled by autonomous nervous system ?

  1. Heart
  2. Uterus
  3. Glands
  4. Eyes

Q13. The effects of sympathetic and parasympathetic nervous systems are ______.

  1. complimentary
  2. contradictory
  3. complimentary and contradictory
  4. none of above.

Q14. Endocrine glands ______.

  1. secrete plasma
  2. secrete nutrients
  3. secrete hormones
  4. secrete antibodies

Q15. Acetylcholine ______.

  1. increases the speed of conduction of impulses
  2. decreases the speed of conduction of impulses
  3. quickens the effect of growth hormones
  4. controls pituitary gland

Q16.______ is called the master gland.

  1. Pineal
  2. Pituitary
  3. Thyroid
  4. Thymus

Q17.______ hormone regulates ionic balance.

  1. Vasopressin
  2. Thyroxin
  3. Glucagon
  4. Testosterone

Q18.______ is the hormone responsible for development of female characteristics.

  1. Adrenalin
  2. Testosterone
  3. Thyroxin
  4. Progesterone

Q19.______ is responsible for lowering glucose level in blood.

  1. Glucagon
  2. Oxytocin
  3. Insulin
  4. Adrenalin

Q20.______ is responsible for increasing glucose level in blood.

  1. Glucagon
  2. Oxytocin
  3. Insulin
  4. Adrenalin

Q21.Prolactin regulates ______.

  1. blood pressure
  2. heartbeat
  3. mammary glands
  4. glucose metabolism

Q22. Nerve net is found in ______.

  1. sponges
  2. hydra
  3. earthworm
  4. cockroach

Q23.Which multicellular organism lacks the nervous system ?

  1. Hydra
  2. Locust
  3. Sponges
  4. Tapeworm

Q24. Which hormone functions as a growth promotor ?

  1. Auxin
  2. Ethylene
  3. Abscisic acid
  4. Both B and C

Q25.Which of the following shows thigmonastic response ?

  1. Sun flower
  2. Insectivorous plants
  3. Lotus
  4. Bryophyllum

Q26.Which two organs are connected by pons with the help of transverse band of nerves ?

  1. Nerves of brain and spinal cord
  2. Both the cerebral hemispheres
  3. Cerebellum and central nervous system
  4. Sympathetic and parasympathetic

Answers 

  1. B
  2. C
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FAQs on Class 10 Science Chapter 6 Question Answers - Control and Coordination

1. What is Control and Coordination in Class 10?
Ans. Control and Coordination is a crucial chapter in Class 10 Science that deals with the nervous system of animals and plants. It explains how organisms respond to various stimuli and how their nervous system coordinates the response.
2. What is the role of hormones in Control and Coordination?
Ans. Hormones play a vital role in Control and Coordination. They are chemical messengers that are produced in one part of the body and affect the functioning of another part. Hormones help in regulating various bodily functions like growth, reproduction, and metabolism.
3. What are the different types of receptors in the human body?
Ans. The human body has various types of receptors, including chemoreceptors, photoreceptors, thermoreceptors, and mechanoreceptors. Chemoreceptors respond to chemical stimuli, photoreceptors respond to light, thermoreceptors respond to temperature, and mechanoreceptors respond to mechanical stimuli like touch, pressure, and vibrations.
4. How does the nervous system control body movements?
Ans. The nervous system controls body movements through the coordination of muscles and nerves. When a stimulus is received, the nervous system sends a signal to the muscles, which contract or relax accordingly, resulting in movement.
5. What is the difference between a reflex action and a voluntary action?
Ans. A reflex action is an automatic response to a stimulus, while a voluntary action is a conscious response to a stimulus. Reflex actions are quick and do not involve the brain, while voluntary actions involve the brain and are slower. An example of a reflex action is blinking, while an example of a voluntary action is walking.
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