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CSAT Prelims Biology - General Knowledge Questions and Answers for UPSC Exam | Page-15

(141) With reference to the blood in a normal person, which one of the following statements is correct?
[A] The blood has more platelets than WBC
[B] White blood cells (WBC) are made by lymph nodes only
[C] Blood cells constitute about 70 percent of the total volume of the blood
[D] Compared to arteries, veins are less numerous and hold less of the body’s blood at any given time

Comment

Answer: Option [A]
(142) The hormone insulin is a
[A] sterol
[B] peptide
[C] fatty acid
[D] glycolipid

Comment

Answer: Option [B]

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(143) Foot and Mouth disease in animals, a current epidemic in some parts of the world, is caused by
[A] virus
[B] fungus
[C] protozoan
[D] bacterium

Comment

Answer: Option [A]
(144) Consider the following statements:
I. Molasses is a by-product of sugar production process.
II. Bagasse obtained in the sugar mills is used as a fuel in the boilers to generate steam for the sugar factories.
III. Sugar can only be produced from sugarcane as the raw material.

Which of the statements are correct?

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

Comment

Answer: Option [A]
(145) Phytotron is a facility to
[A] conserve endangered species of plants
[B] grow plants under disease-free condition
[C] grow plants under controlled conditions
[D] induce mutations

Comment

Answer: Option [C]
(146) Consider the following animals:
I. Sea cow
II. Sea horse
III. Sea lion

Which of the minerals given above is/are required by human body for the contraction of muscles?

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

Comment

Answer: Option [B]
(147) In the context of genetic disorders, consider the following: A woman suffers from colour blindness while her husband does not suffer from it. They have a son and a daughter. In this context, which one of the following statements is most probably correct?
[A] Both children suffer from colour blindness
[B] Both children do not suffer from colour blindness.
[C] Daughter suffers from colour blindness while son does not suffer from it.
[D] Son suffers from colour blindness while daughter does not suffer from it.

Comment

Answer: Option [D]
(148) Ergotism is due to consumption of
[A] rotting vegetables
[B] contaminated water
[C] contaminated grains
[D] safe cooked food

Comment

Answer: Option [C]
(149) The complete conversion of glucose, in the presence of oxygen, into carbon dioxide and water with release of energy is called
[A] hydrolysis
[B] glycolysis
[C] aerobic respiration
[D] anaerobic respiration

Comment

Answer: Option [C]
(150) The cellular and molecular control of programmed cell death is known as
[A] necrosis
[B] degeneration
[C] ageing
[D] apoptosis

Comment

Answer: Option [D]

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