CSAT Prelims Biology - General Knowledge Questions and Answers for UPSC Exam | Page-8

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Questions
71 In human beings, normally in which one of the following parts, does the sperm fertilize the ovum?
A Cervix
B Fallopian tube
C Upper part of uterus
D Lower part of uterus

Answer: Option [B]
72 For which one of the following snakes is the diet mainly composed of other snakes?
A Krait
B Russell’s viper
C King cobra
D Rattlesnake

Answer: Option [D]
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73 The marine animal called Dugong which is vulnerable to extinction is
A Mammal
B Shark
C Bony fish
D Amphibian

Answer: Option [A]
74 Which of the following statements is/are correct?
I. Viruses lack enzymes necessary for the generation of energy.
II. Viruses can be cultured in any synthesis medium.
III. Viruses are transmitted from one organisms to another by biological vectors only.

Select the correct answer using the codes given below.

A I only
B II and III only
C I and III only
D I, II and III

Answer: Option [A]
75 Among the following, which one lays eggs and does not produce young ones directly?
A Kangaroo
B Echidna
C Whale
D Porcupine

Answer: Option [C]
76 Consider the following statements : AIDS –is transmitted
I. By sexual intercourse
II. By blood transfusion
III. By mosquitoes and other blood sucking insects
IV. Across the placenta

A I, II and III are correct
B I, II and IV are correct
C I, III and IV are correct
D I and III are correct

Answer: Option [B]
77 According to the World Health Organization (WHO), the disease which causes the death of the largest number of people today is
A Ebola
B AIDS
C Malaria
D Tuberculosis

Answer: Option [D]
78 Other than Jatropha curcas, why is Pongamia pinnata also considered a good option for the production of bio-diesel in India?
I. Pongamia pinnata grows naturally in most of the arid regions of India.
II. The seeds of Pongamia pinnata are rich in lipid content of which nearly half is oleic acid.

Which of the statements given above is/are correct?

A I only
B II only
C Both I and II
D Neither I nor II

Answer: Option [C]
79 Consider the following statements about probiotic food:
I. Probiotic food contains live bacteria which are considered beneficial to humans.
II. Probiotic food helps in maintaining gut flora.

Which of the statements given above is/are correct?

A I only
B II only
C Both I and II
D Neither I nor II

Answer: Option [C]
80 With reference to soil conservation, consider the following practices:
I. Crop rotation
II. Sand fences
III. Terracing
IV. Wind breaks

Which of the above are considered appropriate methods for soil conservation in India.

A I, II and III only
B II and IV only
C I, III and IV only
D I, II, III and IV

Answer: Option [D]

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