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Class 10 NCERT Biology MCQs for UPPSC (UP) Exam
It covers all Important Questions with answers on Class 10 NCERT Biology for the UPPSC (UP) exam. The questions are based on important topics. Details about the questions:- Topic: Class 10 NCERT Biology
- Type of Questions: MCQs with solutions
- Number of Questions: 50
- You can attempt them on EduRev to score high in UPPSC (UP) exam.
Largest gland in the body is –- a)Liver
- b)Pancreas
- c)Gastric gland
- d)Adrenal
Correct answer is 'A'. Can you explain this answer?
Largest gland in the body is –
a)
Liver
b)
Pancreas
c)
Gastric gland
d)
Adrenal
 | Pooja Shah answered |
Liver is the largest gland in human body. It carries out many functions such as secretion of bile juices for decomposition of lipids and vitamins, preparation of proteins for blood plasma that enables blood clotting and also detoxification.
Which of the following is biodegradable?- a)Plastic mugs
- b)Leather belts
- c)Silver foil
- d)Iron nails
Correct answer is option 'B'. Can you explain this answer?
Which of the following is biodegradable?
a)
Plastic mugs
b)
Leather belts
c)
Silver foil
d)
Iron nails
 | Raghav Bansal answered |
Leather belts are biodegradable whereas silver foils, plastic mugs and iron nails are non - biodegradable. It takes leather between 25-50 years to completely decompose.
A human zygote has :-- a)46 chromosomes
- b)23 chromosomes
- c)47 chromosomes
- d)48 chromosome
Correct answer is option 'A'. Can you explain this answer?
A human zygote has :-
a)
46 chromosomes
b)
23 chromosomes
c)
47 chromosomes
d)
48 chromosome
 | Anoushka Nambiar answered |
The cells from each parent that combine to form the zygote are called gametes. In humans, the male gamete is called sperm, and the female gamete is called an egg. When the gametes join they form a cell called a zygote. Human sperm and eggs contain 23 chromosomes. Human zygotes contain 46 chromosomes.
Flow of energy in an ecosystem is always- a)unidirectional
- b)bidirectional
- c)multidirectional
- d)no specific direction
Correct answer is option 'A'. Can you explain this answer?
Flow of energy in an ecosystem is always
a)
unidirectional
b)
bidirectional
c)
multidirectional
d)
no specific direction
| | Aishwarya jain answered |
Energy flows only in one direction in an ecosystem.
Depletion of ozone is mainly due to- a)chlorofluorocarbon compounds
- b)carbon monoxide
- c)methane
- d)pesticides
Correct answer is option 'A'. Can you explain this answer?
Depletion of ozone is mainly due to
a)
chlorofluorocarbon compounds
b)
carbon monoxide
c)
methane
d)
pesticides
 | Rahul tiwari answered |
Depletion of ozone layer is mainly due to chlorofluorocarbon compounds.
Practice Quiz or MCQ (Multiple Choice Questions) with Solutions of Chapter "Respiration (Life Processes)" are available for CBSE Class 10 Science and have been compiled as per the syllabus of CBSE Class 10 Science Q. Vocal cards occur in –- a)Pharynx
- b)Larynx
- c)Glottis
- d)Bronchial tube
Correct answer is option 'B'. Can you explain this answer?
Practice Quiz or MCQ (Multiple Choice Questions) with Solutions of Chapter "Respiration (Life Processes)" are available for CBSE Class 10 Science and have been compiled as per the syllabus of CBSE Class 10 Science
Q. Vocal cards occur in –
a)
Pharynx
b)
Larynx
c)
Glottis
d)
Bronchial tube
 | Praveen Yaduvanshi answered |
Ans B bcoz The vocal folds, also known commonly as vocal cords or voice reeds,They vibrate, modulating the flow of air being expelled from the lungs during phonation.
How many forms of fossil fuels are there- a)One
- b)Two
- c)Three
- d)Four
Correct answer is option 'C'. Can you explain this answer?
How many forms of fossil fuels are there
a)
One
b)
Two
c)
Three
d)
Four
 | Shubham Mukherjee answered |
There are three major forms of fossil fuels they are coal, oil and natural gas. They formed from organic remains of plants and animals that were converted into coal, oil and natural gas by exposure to heat and the pressure of the earth’s crust over millions of years.
The minimum speed of wind which is required to run a windmill is:- a)15Km/h
- b)35 Km/h
- c)25Km/h
- d)5 Km/h
Correct answer is option 'A'. Can you explain this answer?
The minimum speed of wind which is required to run a windmill is:
a)
15Km/h
b)
35 Km/h
c)
25Km/h
d)
5 Km/h
 | Krishna Iyer answered |
The minimum wind velocity for a windmill to function is 15 km per hour.
As soon as the speed of the wind becomes less than 15 kilometre per hour, the generator stops working.
As soon as the speed of the wind becomes less than 15 kilometre per hour, the generator stops working.
Which of the following groups does not contain only biodegradable items ?- a)Grass, flowers and leather
- b)Grass, wood and plastic
- c)Fruit-peels, cake and lime juice
- d)Cake, wood and grass
Correct answer is option 'B'. Can you explain this answer?
Which of the following groups does not contain only biodegradable items ?
a)
Grass, flowers and leather
b)
Grass, wood and plastic
c)
Fruit-peels, cake and lime juice
d)
Cake, wood and grass
 | Amit Kumar answered |
Correct Answer :- b
Explanation : A Non-Biodegradable material can be defined as a kind of substance which cannot be broken down by natural organisms and acts as a source of pollution. ... Non-biodegradable wastes are those who cannot be decomposed or dissolved by natural agents.
Plastic is a non-biodegradable substance.
Can you explain the answer of this question below:Haemoglobin is –
- A:
Vitamin
- B:
Skin pigment
- C:
Blood carrier
- D:
Respiratory pigment
The answer is D.
Haemoglobin is –
Vitamin
Skin pigment
Blood carrier
Respiratory pigment
| | Krishna Iyer answered |
the hemoglobin increases the oxygen carrying capacity of blood. In humans and most other vertebrates, the most common respiratory pigment is a protein called hemoglobin.
Can you explain the answer of this question below:Digestion of proteins starts in:
- A:
Mouth
- B:
Stomach
- C:
Pancreas
- D:
Small intestine
The answer is b.
Digestion of proteins starts in:
Mouth
Stomach
Pancreas
Small intestine
| | Krishna Iyer answered |
Digestion of proteins starts in stomach and is completed in intestine. The pepsin is the most important proteolytic enzyme present in stomach. It is secreted in inactive pepsinogen form which is activated on exposure to gastric acid. Pepsin breaks proteins into smaller proteoses and peptones. The peptones, proteoses are acted upon by trypsin, chymotrypsin and carboxypeptidase present in pancreatic juice. The action of these enzymes breaks peptones and proteoses into dipeptides. In intestinal juice is present aminopeptidase which finally release amino acids from dipeptides, thus finishing the digestion of proteins.
Which of the following limits the number of trophic levels in a food chain ?- a)Decrease in energy at higher levels
- b)Deficient food supply
- c)Polluted air
- d)Water
Correct answer is option 'A'. Can you explain this answer?
Which of the following limits the number of trophic levels in a food chain ?
a)
Decrease in energy at higher levels
b)
Deficient food supply
c)
Polluted air
d)
Water
| | Ananya Das answered |
Due to the 10% rule, there is a decrease in energy at every higher trophic level.
Which of the following is not a biotic component of an ecosystem ?- a)Rainfall
- b)Plants
- c)Animals
- d)Human beings
Correct answer is option 'A'. Can you explain this answer?
Which of the following is not a biotic component of an ecosystem ?
a)
Rainfall
b)
Plants
c)
Animals
d)
Human beings
| | Amit Kumar answered |
Rainfall is not a living organism
Which of the following is motile?- a)Male gamete
- b)Female gamete
- c)Cotyledons
- d)Zygote
Correct answer is option 'A'. Can you explain this answer?
Which of the following is motile?
a)
Male gamete
b)
Female gamete
c)
Cotyledons
d)
Zygote
| | Krishna Iyer answered |
Sperm motility is the ability of sperm to move efficiently. This is important in fertility because sperm need to move through the woman's reproductive tract to reach and fertilize her egg.
Which of the following is non-biodegradable?- a)Wool
- b)Nylon
- c)Animal bones
- d)Tea leaves
Correct answer is option 'B'. Can you explain this answer?
Which of the following is non-biodegradable?
a)
Wool
b)
Nylon
c)
Animal bones
d)
Tea leaves
 | Srishti Singh answered |
Nylon plastic is the name for a long-chain, fiber forming polyamides, composing one of the largest groups of synthetic polymers. These chains are naturally very resistant to wear and tear, temperature and chemicals.so its non biodegradable.
Which is not a function of the male reproductive system in humans?- a)Nourishing the embryo
- b)Producing the male gametes
- c)Delivering the male gametes to the site of fertilization
- d)Secreting male sex hormones
Correct answer is option 'A'. Can you explain this answer?
Which is not a function of the male reproductive system in humans?
a)
Nourishing the embryo
b)
Producing the male gametes
c)
Delivering the male gametes to the site of fertilization
d)
Secreting male sex hormones
 | Harshu answered |
Nourishing the embryo is the process in female reproductive system in which the embryo is nourished and protected. While the others r male reproductive system. Hope uh got that :)
Which one does not produce any digestive enzyme?- a)Pancreas
- b) Liver
- c)Stomach
- d)none of these
Correct answer is option 'B'. Can you explain this answer?
Which one does not produce any digestive enzyme?
a)
Pancreas
b)
Liver
c)
Stomach
d)
none of these
| | Krishna Iyer answered |
The liver doesn't secrete any enzymes. The liver secretes bile. In the presence of bile, lipase, an enzyme breaks down the fat into smaller units. Bile is stored on the gall bladder.
- a)Large intestine
- b)Mouth
- c)Anal sphincters
- d)Urethra
Correct answer is 'C'. Can you explain this answer?
| | Anita Menon answered |
An anal sphincter is a group of muscles at the end of the rectum that surrounds the anus and controls the release of stool, thereby maintaining continence. There are two sphincter muscles: one is internal and one is external. The external muscle helps maintain continence and keep stool in the rectum.
During digestion, fats are broken down to:- a)Micelles
- b)Fatty acids and glycerol
- c)Amino acids
- d)Glucose
Correct answer is option 'B'. Can you explain this answer?
During digestion, fats are broken down to:
a)
Micelles
b)
Fatty acids and glycerol
c)
Amino acids
d)
Glucose
| | Himaja Ammu answered |
During digestion fats r broken down to fatty acids and glycerol by the process of emulsification....
The main constituent of biogas is : - a)methane
- b)carbon dioxide
- c)hydrogen
- d)hydrogen sulphide
Correct answer is option 'A'. Can you explain this answer?
The main constituent of biogas is :
a)
methane
b)
carbon dioxide
c)
hydrogen
d)
hydrogen sulphide
 | Aditi Choudhury answered |
Bio-gas is an excellent fuel as it contains up to 75% methane. It burns without smoke, leaves no residue like ash in wood, charcoal and coal burning. Its heating capacity is high. Bio-gas is also used for lighting.
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