Biology is the study of life and living things. It can be divided into different areas that look at the structure, function, anatomy, and behavior of organisms.
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Question 121: The elephant grass is propagated vegetatively by means of
Options:
A) corms
B) bubils
C) suckers
D) stolons
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The correct answer is D .
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Question 122: What ecological condition favours the breeding of black flies?
Options:
A) Fresh water habitat
B) Water in ponds and swamp
C) Water in small containers
D) Fast flowing streams
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The correct answer is B .
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Question 123: An animal body that can be cut along its axis in any plane to give two identical parts is said to be
Options:
A) radially symmetrical
B) bilaterally symmetrical
C) asymmetrical
D) symmetrical
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The correct answer is A .
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Question 124: Which path does sound entering the human ear follow?
Options:
A) Oval window → ossicles → ear drum
B) Ear drum → oval window → ossicles
C) Ear drum → ossicles → oval window
D) Ossicles → ear drum → oval window
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The correct answer is C .
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Question 125: The increasing order of the particle size in following soil type is
Options:
A) clay → sand → silt →gravel
B) silt → sand → clay → gravel
C) clay → silt → sand → gravel
D) silt → clay → sand → gravel
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The correct answer is C .
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Question 126: A major adaptive feature of endoparasites is the
Options:
A) loss of the organ of movement
B) presence of claws
C) loss of the central nervous system
D) presence of piercing mouthparts
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The correct answer is D .
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Question 127: The organism that has a hydrostatic skeleton is
Options:
A) Tilapia
B) Hydra
C) mosquito larva
D) earthworm
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The correct answer is D .
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Question 128: Countershading is an adaptive feature that enables animals to
Options:
A) fight enemies
B) remain undetected
C) warn enemies
D) attract mates
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The correct answer is B .
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Question 129: Insects are considered the most successful among the invertebrates because they
Options:
A) possession of exoskeletons
B) survive in various environmental conditions
C) have wings for flight
D) possess the ability to change their forms
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The correct answer is C .
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Question 130: The body of a snail is divided into head
Options:
A) thorax and abdomen
B) visceral mass and abdomen
C) thorax and foot
D) visceral mass and foot
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The correct answer is D .