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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

Comment

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.

Comment

Answer: Option [C]

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(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

Comment

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

Comment

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

Comment

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

Comment

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

Comment

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

Comment

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

Comment

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

Comment

Answer: Option [D]

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