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CSAT Prelims Biology - General Knowledge Questions and Answers for UPSC Exam | Page-4

31 The only snake that builds a nest is:
A Krait
B Chain viper
C Saw-scaled viper
D King Cobra

Answer: Option [D]
32 Which one of the following organisms can serve as a biofertilizer for rice crop?
A Mycorrhizal fungi
B Azotobacter sp.
C Blue-green algae
D Rhizobium sp.

Answer: Option [C]


33 In a bisexual flower, if androecium and gynoecium mature at different times, the phenomenon is known as
A dichogamy
B heterogamy
C monogamy
D herkogamy

Answer: Option [A]
34 Which one of the following is an insectivorous plant?
A Night queen
B Pitcher plant
C Flame of the forest
D Passion flower plant

Answer: Option [B]
35 Fruits stored in a cold chamber exhibit longer storage life because
A exposure to sunlight is prevented
B there is an increase in humidity
C rate of respiration is decreased
D concentration of carbon dioxide in the environment is increased

Answer: Option [C]
36 Which one of the following antimicrobial drugs, is suitable for treatment of both tuberculosis and leprosy?
A Isoniazid
B Streptomycin
C P-aminosalicyclic acid
D Rifampicin

Answer: Option [D]
37 Besides proteins and carbohydrates, other elements of nutritional value found in milk, include
A calcium and iron
B potassium and iron
C calcium and potassium
D calcium, potassium and iron

Answer: Option [C]
38 Which one of the following type of microorganisms is most widely used in industries?
A Bacteria
B Bacteria and algae
C Bacteria and fungi
D Bacteria, microalgae and fungi

Answer: Option [D]
39 Consider the following statements
I. Tapeworm is a hermaphrodite
II. Round-worm has separate sexes
III. Filarial is caused by a nematode
IV. Guinea-worm is an annelid

Which of these are correct?

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

Answer: Option [B]
40 Consider the following conditions of a sick human body
I. Swollen lymph nodes
II. Sweating at night
III. Loss of memory
IV. Loss of weight

Which of these are symptoms of AIDS?

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

Answer: Option [D]

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