general science

Biology MCQ Questions and Answers Page - 10

1.

Which of the following is commonly used in preparing custard powder  ?

Answer/ Hint      

Answer : C

Explanation :

2.

Damping off of seedling is caused by

Answer/ Hint      

Answer : D

Explanation :

3.

Transpiration increases in  :

Answer/ Hint      

Answer : A

Explanation :

4.

Amino acids are required for the synthesis of  :

Answer/ Hint      

Answer : C

Explanation :

5.

Which of the following is a form of sexual reproduction  :

Answer/ Hint      

Answer : B

Explanation :

6.

Which part of the cinchona yields a drug  ?

Answer/ Hint      

Answer : B

Explanation :

7.

Compounds that are needed for enzymes to function properly are

Answer/ Hint      

Answer : B

Explanation :

8.

What would be the formula of Fructose  ?

Answer/ Hint      

Answer : B

Explanation :

9.

Which of the following plant hormones are incorrectly paired  ?

Answer/ Hint      

Answer : D

Explanation :

10.

Inhibition of photosynthesis in the presence of  O2  in  C3  plants is called  :

Answer/ Hint      

Answer : D

Explanation :

11.

Which of the following is true for photoperiodic  ?

Answer/ Hint      

Answer : D

Explanation :

12.

Which of the following is responsible for transport of food and other substances in plants  ?

Answer/ Hint      

Answer : B

Explanation :

13.

Root cap is derived from

Answer/ Hint      

Answer : B

Explanation :

14.

The substrate of photorespiration is

Answer/ Hint      

Answer : C

Explanation :

15.

Which of the following fibres is considered as the strongest natural fibre  ?

Answer/ Hint      

Answer : D

Explanation :

16.

Potato is a

Answer/ Hint      

Answer : B

Explanation :

17.

Which organism is responsible for alcohol fermentation  ?

Answer/ Hint      

Answer : B

Explanation :

18.

The liberation of oxygen during photosynthesis is due to

Answer/ Hint      

Answer : B

Explanation :

19.

The food in Onion is stored in the form of  _____________ .

Answer/ Hint      

Answer : D

Explanation :

20.

Fermentation is a type of  _____________  process.

Answer/ Hint      

Answer : B

Explanation :

21.

The elements known as primary nutrients for plants

Answer/ Hint      

Answer : A

Explanation :

22.

Which one of the following forms the base of vegetable fibres  ?

Answer/ Hint      

Answer : A

Explanation :

23.

Which light is least effective in photosynthesis  ?

Answer/ Hint      

Answer : B

Explanation :

24.

The maximum fixation of solar energy is done by

Answer/ Hint      

Answer : D

Explanation :

25.

Solar energy is converted into chemical energy during  :

Answer/ Hint      

Answer : C

Explanation :

26.

Which of the following plays an important role in photosynthesis  ?

Answer/ Hint      

Answer : A

Explanation :

27.

______________  is a multibranched polysaccharide of glucose that serves as a from of energy storage in animals and fungi.

Answer/ Hint      

Answer : B

Explanation :

28.

Chlorophyll was first isolated and named by

Answer/ Hint      

Answer : D

Explanation :

29.

The latex of which plant is used commercially  ?

Answer/ Hint      

Answer : C

Explanation :

30.

Chlorophyll was first isolated and named by

Answer/ Hint      

Answer : D

Explanation :

31.

Photosynthesis takes place inside plant cells in  _____________ .

Answer/ Hint      

Answer : B

Explanation :

32.

Where do plants synthesize protein from  ?

Answer/ Hint      

Answer : C

Explanation :

33.

____________  is the study of the physical form and external structure of plants.

Answer/ Hint      

Answer : C

Explanation :

34.

Which of the following is not true about Gymnosperms  ?

Answer/ Hint      

Answer : B

Explanation :

35.

Loss of water in plants in the form of liquid is known as  :

Answer/ Hint      

Answer : C

Explanation :

36.

Water stomata are present in the  :

Answer/ Hint      

Answer : C

Explanation :

37.

For which of the following a  BT  seed has also been developed  ?

Answer/ Hint      

Answer : C

Explanation :

38.

Which among the following type of trees are also called as sun loving trees  ?

Answer/ Hint      

Answer : B

Explanation :

39.

Onion is an example of bulb, which is a modified  _____________ .

Answer/ Hint      

Answer : A

Explanation :

40.

Potato is an example of  ____________ .

Answer/ Hint      

Answer : A

Explanation :

41.

Which part of the plant gives us saffron  ?

Answer/ Hint      

Answer : D

Explanation :

42.

Which of the following transports water from the roots of the plant to its leaves  ?

Answer/ Hint      

Answer : C

Explanation :

43.

Which of the following trees shed their leaves once in a year  ?

Answer/ Hint      

Answer : A

Explanation :

44.

Plant tissues are of how many types  ?

Answer/ Hint      

Answer : A

Explanation :

45.

Red rot is a disease caused to which of the following plant  ?

Answer/ Hint      

Answer : B

Explanation :

46.

Photosynthesis takes in the presence of chlorophyll and

Answer/ Hint      

Answer : D

Explanation :

47.

Cinnamon is obtained from which part of the plant  ?

Answer/ Hint      

Answer : B

Explanation :

48.

What is the role of Pneumatophores  ?

Answer/ Hint      

Answer : B

Explanation :

49.

Which of the following is not among the  3  main classes of Algae  ?

Answer/ Hint      

Answer : D

Explanation :

50.

Sexual reproduction in Algae that takes place through fusion of two dissimilar size gametes is called  ?

Answer/ Hint      

Answer : B

Explanation :

51.

Sexual reproduction in algae that takes place through fusion of two similar size gametes is called  ?

Answer/ Hint      

Answer : C

Explanation :

52.

Which of the following is not correct  ?

Answer/ Hint      

Answer : B

Explanation :

53.

In which of the following class are the pulse producing plants kept  ?

Answer/ Hint      

Answer : C

Explanation :

54.

Which of the following is the product of the process of photosynthesis  ?

Answer/ Hint      

Answer : C

Explanation :

55.

Which part of plant conducts water in plants  ?

Answer/ Hint      

Answer : D

Explanation :

56.

Which type of plants have weak stems and take support on neighbouring structures to climb up  ?

Answer/ Hint      

Answer : B

Explanation :

57.

Which type of plants are very tall and have hard and thick brown stem  ?

Answer/ Hint      

Answer : A

Explanation :

58.

What is thick vein present in the middle of the leaf called  ?

Answer/ Hint      

Answer : A

Explanation :

59.

Which one of the following is connected with transport of water in plants  ?

Answer/ Hint      

Answer : B

Explanation :

60.

Which among the following can be termed as a  “dynamic living entity”  ?

Answer/ Hint      

Answer : C

Explanation :

61.

Which among the following is an example of dicot seed  ?

Answer/ Hint      

Answer : C

Explanation :

62.

The chicory powder which is mixed with coffee powder is obtained from which of the following part of plant  ?

Answer/ Hint      

Answer : D

Explanation :

63.

Seeds can best be preserved in which condition  ?

Answer/ Hint      

Answer : C

Explanation :

64.

How the rate of absorption of water through roots can be increased  ?

Answer/ Hint      

Answer : C

Explanation :

65.

A spore producing plant is  _____________ .

Answer/ Hint      

Answer : B

Explanation :

66.

Which of the following statement is  CORRECT  ?

Answer/ Hint      

Answer : C

Explanation :

67.

Which is the usual reproductive part of a plant  ?

Answer/ Hint      

Answer : D

Explanation :

68.

In plants, water is transported through which of the following medium  ?

Answer/ Hint      

Answer : A

Explanation :

69.

In plants, mature ovary changes to which part of the plant  ?

Answer/ Hint      

Answer : D

Explanation :

70.

Which of the following is  NOT  a forest product  ?

Answer/ Hint      

Answer : D

Explanation :

71.

Which of the following are the largest fixator of solar energy  ?

Answer/ Hint      

Answer : C

Explanation :

72.

Which among the following helps in circulation of blood  ?

Answer/ Hint      

Answer : B

Explanation :

73.

Which among the following elements increases the absorption of water and calcium in plants  ?

Answer/ Hint      

Answer : B

Explanation :

74.

Our bones and teeth are generally made of –

Answer/ Hint      

Answer : A

Explanation :

75.

Pituitary gland is located in –

Answer/ Hint      

Answer : A

Explanation :

76.

What is the limit of  MG/DL  of blood sugar in the normal person at the time of fast  ?

Answer/ Hint      

Answer : C

Explanation :

77.

Animals do not have enzyme systems which enable them to make use of the energy from  :

Answer/ Hint      

Answer : A

Explanation :

78.

A clone is a colony of  :

Answer/ Hint      

Answer : C

Explanation :

79.

In the case of test tube babies

Answer/ Hint      

Answer : D

Explanation :

80.

Kidney disease in man is caused by the pollutant  :

Answer/ Hint      

Answer : A

Explanation :

81.

Quantity of fresh air required for a man is

Answer/ Hint      

Answer : A

Explanation :

82.

Why excessive heating and repeated use of cooking oil is most undesirable  ?

Answer/ Hint      

Answer : B

Explanation :

83.

Which of the following is a female sex hormone  ?

Answer/ Hint      

Answer : A

Explanation :

84.

Labourers who do hard manual labour develop thick skin on their palms and soles due to  :

Answer/ Hint      

Answer : D

Explanation :

85.

Which of the following blood group is a universal reciptient  ?

Answer/ Hint      

Answer : C

Explanation :

86.

Which of the following is known as Vitamin B1  ?

Answer/ Hint      

Answer : B

Explanation :

87.

Which of the following food items is rich in iron  ?

Answer/ Hint      

Answer : B

Explanation :

88.

The element which is the most abundant in the human body is  :

Answer/ Hint      

Answer : A

Explanation :

89.

Who discovered sex hormones  ?

Answer/ Hint      

Answer : B

Explanation :

90.

Fermentation is a process of decomposition of an organic compound by  :

Answer/ Hint      

Answer : B

Explanation :

91.

Adherent mucoid alkaline substance covering the inner lining of stomach is to  :

Answer/ Hint      

Answer : C

Explanation :

92.

The area of the human tongue sensitive to bitterness is restricted to  :

Answer/ Hint      

Answer : D

Explanation :

93.

Amniocentesis is a method for  :

Answer/ Hint      

Answer : A

Explanation :

94.

Which of the following blood cells is compulsory for blood coagulation  ?

Answer/ Hint      

Answer : A

Explanation :

95.

By which the sex of a child is determined before birth  ?

Answer/ Hint      

Answer : B

Explanation :

96.

What may be the cause of malfunctioning of thyroid gland  ?

Answer/ Hint      

Answer : A

Explanation :

97.

Which one of the following is  NOT  a function of kidney  ?

Answer/ Hint      

Answer : C

Explanation :

98.

Which of the following hormone is released in excess quantity during excitement  ?

Answer/ Hint      

Answer : D

Explanation :

99.

Which is the gland that holds the body’s thermostat  ?

Answer/ Hint      

Answer : D

Explanation :

100.

What is the chromosome number in a human ovum  ?

Answer/ Hint      

Answer : D

Explanation :

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Biology MCQ Questions and Answers Page - 10