Life Science MCQ Questions Answers Biology Practice Set


21) Bamboo is classified as

a)Bush

b)Tree

c)Grass

d)Weed

View Answer
Option – c)

22) Which one among the following is known as ‘animal starch’ ?

a)Cellulose

b) Glycogen

c) Pectin

d) Chitin

View Answer
Option – b)

23) Who discovered the Polio vaccine ?

a)Louis Pasteur

b) Jonas Salk

c)Konrad Zuse

d) Eli Whitney

View Answer
Option -b)

24) Oxyreductases, transferases, hydrolases, lyases, isomerases and ligases are all classes of

a) hormones

b) enzymes

c) proteins

d) vitamins

View Answer
Option – b)

25) Ozone hole refers to

a) hole in ozone layer

b) decrease in the ozone layer in troposphere

c) decrease in thickness of ozone layer in stratosphere

d) increase in the thickness of ozone layer in troposphere

View Answer
Option – c)[/su_spoiler


26) Herbicides are used to control ?

a) Fungi

b) Nematodes

c) Weeds

d) Insects

View Answer
Option - c)

27) Non-clotting of blood is caused by deficiency of ?

a) Vitamin A

b) Vitamin C

c) Vitamin E

d) Vitamin K

View Answer
Option – d)

28) Monotremes are unique mammals because they

a) posses hair

b) give birth to live young

c) secret milk in a pouch

d) lay eggs

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Option – d)

29) One of the following is not a function of bones.

a) Place for muscle attachment

b) Protection of vital organs

c) Secretion of hormones for calcium regulation in blood and bones

d) Production of blood corpuscles

View Answer
Option – c)

30) N2 content is kept constant in the biosphere due to

a) N2 fixation

b) industrial pollution

c) nitrogen cycle

d) absorption of N2

View Answer
Option – c)
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