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 31:
What is the primary source of variation in a population?
Options:
A) Gene flow
B) Mutation
C) Natural selection
D) Genetic drift
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The correct answer is B .
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Question 32:
The correct sequence of the movement of urea during urine formation is?
Options:
A) glomerulus ---> Bowman's capsule -> convoluted tubule ---> Henle's loop -> collecting- tubule
B) glomerulus -> Bowman's capsule -> convoluted tubule -> Henle's loop -> convoluted tubule -> collecting tubule
C) convoluted tubule -> glomerulus --> Nettle's loop -> Bowman's capsule->collecting tubule
D) convoluted tubule -> Bowman's capsule -> Henle's loop -7> glomerulus -> collecting tubule
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The correct answer is A .
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Question 33: The slender, long and slightly curved beak of the sun-bird is an adaptation for breeding for feeding on
Options:
A) nectar
B) small seeds
C) big seeds
D) insects
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The correct answer is A .
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Question 34: Example of a fish that aestivates is
Options:
A) shark
B) croaker
C) lung fish
D) cat fish
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The correct answer is C .
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Question 35:
The blood vessel which carries blood from the alimentary canal to the liver is the?
Options:
A) hepatic artery
B) hepatic vein
C) hepatic portal vein
D) mesenteric artery
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The correct answer is C .
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Question 36: Floating microscopic heterotrophs are mostly grouped as
Options:
A) phytoplankton
B) zooplankton
C) microbes
D) nekton
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The correct answer is B .
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Question 37: A phenotypic character with intermediate forms that can be graded from one extreme to the other is referred to as
Options:
A) discontinuous variation
B) continuous variation
C) a mutant
D) a genome
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The correct answer is B .
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Question 38: The pathogen that cause smallpox is
Options:
A) picornavirus
B) peramyxovirus
C) herpesvirus
D) poxvirus
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The correct answer is D .
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Question 39: Each of the following is an anthropod EXCEPT the
Options:
A) crab
B) spider
C) snail
D) milipede
E) cockroach
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The correct answer is C .
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Question 40: A non - renewable alternative source of energy is
Options:
A) wind generator
B) solar panels
C) nuclear energy
D) hydroelectric power
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The correct answer is C .