CSAT Prelims Biology - General Knowledge Questions and Answers for UPSC Exam | Page-13

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Questions
121 Which one of the following organisms is likely to show the highest concentration of DDT, once it has been introduced into the ecosystem?
A Cattle
B Snake
C Toad
D Grasshopper

Answer: Option [B]
122 A small pouch containing silica gel is often found in bottles of medicine in tablet or powder form because silica gel
A absorbs moisture
B kills bacteria
C kills germs and spores
D absorbs all gases present inside the battle

Answer: Option [A]
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123 Which one of the following statements is not correct?
A All echinoderms are viviparous.
B Round warm has no circulatory system.
C In bony fishes, swim bladder is usually present.
D In cartilaginous fishes, fertilization is internal.

Answer: Option [A]
124 Consider the following kinds of organisms:
I. Bat
II. Bee
III. Bird

Which of the above is/are pollinating agent/agents?

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

Answer: Option [D]
125 A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive and O positive. The blood group of the adopted son is?
A A positive
B B positive
C O positive
D Cannot be determine on the basis of the given data

Answer: Option [C]
126 Which of the following diseases can be transmitted from one person to another through tattooing?
I. Chikungunya
II. Hepatitis B
III. HIV/AIDS

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 [B]
127 In the context of Indian wild life, the flying fox is a
A Bat
B Kite
C Stork
D Vulture

Answer: Option [A]
128 Consider the following diseases:
I. Diphtheria
II. Chickenpox
III. Smallpox

Which of the above diseases has/have been eradicated in India?

A I and II
B III
C I, II and III
D None

Answer: Option [B]
129 Which of the following adds/add nitrogen to the soil?
I. Excretion of urea by animals
II. Burning of coal by man
III. Death of vegetarian

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 [C]
130 Other than resistance to pests, that are the prospects for which genetically engineered plants have been created?
I. To enable them to withstand drought
II. To increase the nutritive value of the produce
III. To enable them to grow and do photosynthesis in spaceships and space stations
IV. To increase their shelf life

Select the correct answer using the codes given below:

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

Answer: Option [C]

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