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CSAT Prelims Biology - General Knowledge Questions and Answers for UPSC Exam | Page-3

(21) It is possible to produce seedless tomato fruits by
[A] spraying hormones on flowers
[B] spraying mineral solution on plants
[C] applying trace elements in tomato fruits
[D] applying fertilizers containing radioactive elements

Comment

Answer: Option [A]
(22) “Athlete’s Foot” is a disease caused by
[A] Nematode
[B] Protozoan
[C] Fungus
[D] Bacteria

Comment

Answer: Option [C]

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(23) Which one of the following types of light are strongly absorbed by plants?
[A] Indigo and yellow
[B] Yellow and violet
[C] Violet and orange
[D] Blue and red

Comment

Answer: Option [D]
(24) “It begins as a single cell and grows into a merciless disease that claims millions of lives year after year. But scientist are steadily unlocking its mysteries and the fight against it, may now have reached a dramatic turning point. New discoveries promise better therapies and hope in the war against ……… “. The disease referred to in the above quotation is
[A] AIDS
[B] Cancer
[C] Tuberculosis
[D] Alzheimer’s disease

Comment

Answer: Option [B]
(25) Arteries supplying blood to the heart are called
[A] Hepatic arteries
[B] Pulmonary arteries
[C] Carotid arteries
[D] Coronary arteries

Comment

Answer: Option [D]
(26) Endoscopy, a technique used to explore the stomach or other inner parts of the body is based on the phenomenon of
[A] total internal reflection
[B] diffraction
[C] polarization
[D] interference

Comment

Answer: Option [A]
(27) In the context of organic evolution, the loss of limbs in snakes is explained by the phenomenon of
[A] natural selection
[B] use and disuse of organs
[C] adaption to living in burrows
[D] inheritance of acquired characters

Comment

Answer: Option [B]
(28) What is the name of the vessel that delivers the nutrient/ rich blood from the stomach and small intestine to the liver?
[A] Hepatic vein
[B] Left hepatic artery
[C] Hepatic portal vein
[D] Right hepatic artery

Comment

Answer: Option [C]
(29) Consider the following statements:
I. Non-functioning of lachrymal gland is an important symptom of deficiency of Vitamin A.
II. Deficiency of Vitamin B1 can lead to indigestion and heart enlargement.
III. Vitamin C deficiency can lead to pain in the muscles.
IV. Deficiency of Vitamin D causes increased loss of Ca++ in urine.

Which of the statements given above are correct?

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

Comment

Answer: Option [D]
(30) Consider the following statements:
I. Hepatitis B is several times more infectious than HIV/AIDS
II. Hepatitis B can cause liver cancer

Which of the statements given above is/are correct?

[A] Only I
[B] Only II
[C] Both I and II
[D] Neither I nor II

Comment

Answer: Option [C]

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