Life Science MCQ Questions Answers Biology Practice Set

51) Other than spreading malaria, anopheles mosquitoes are also vectors of

a) dengue fever

b) filariasis

c) encephalitis

d) yellow fever

View Answer
Option – b)

52) The branch of agriculture which deals with the feeding, shelter, health and breeding of the domestic animals is called ?

a) Animal Husbandry

b) Dairy Science

c) Veterinary Science

d) Poultry

View Answer
Option – a)

53) Rubber is obtained from ?

a)cell sap

b)latex

c)gun

d)resin

View Answer
Option – b)

54) Most abundant tissues of our body are

a) muscular

b) connective

c) epithelial

d) nervous

View Answer
Option – b )

55) Phloem tissue is found in ?

a)Plants

b)Insects

c)Mammals

d)All of above

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Option – a)

56) Process of cell division can take place by

a) heterosis

b) fusion

c) mitosis

d) None of these

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Option – c)

57) Our skin, when exposed to excess sunlight, becomes dark. This is because our skin pigments called

a) flavoxanthin

b) melanin

c) carotene

d) Xanthophyll

View Answer
Option – b)

58) Heart attack occurs due to ?

a)Bacteria

b) Stopping of heart beat

c) Lack of blood supply to the heart itself

d) Impairment of heart’s working due to unknown reason

View Answer
Option – c)

59) Pyorrhoea is a disease of the

a)nose

b)gums

c)heart

d)lungs

View Answer
Option – b)

60) Ordinary table salt is sodium chloride. What is baking soda?

a) Potassium chloride

b) Potassium carbonate

c) Potassium hydroxide

d) Sodium bicarbonate

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Option – d)

61) Potatoes are borne on ?

a)Primary roots

b) Stem branches

c) Lateral roots

d) Adventitious roots

View Answer
Option – b)

62) Neurospora is used as genetic material because

a) it has short life cycle of 10 days

b) the product of single meiosis can be easily analysed

c) meiotic products are linearly arranged in the form of ordered tetrads

d) is a diploid fungus

View Answer
Option – a)

63) Carrot is orange in color because ?

a)It grows in the soil

b) It is not exposed to sunlight

c) It contains carotene

d) The entire plant is orange in color

View Answer
Option – c)

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