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 161: the part of the stomach nearer the gullet is called th
Options:
A) epiglottis
B) cardiac spincter
C) duodenum
D) pyloric sphincter
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The correct answer is B .
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Question 162: Bacteria in the large intestine of man are important in the
Options:
A) synthesis of vitamins K and B2
B) digestion of vegetables
C) synthesis of vitamins A and D
D) absorption of water
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The correct answer is A .
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Question 163: Nervous control differs from hormonal control in that the former
Options:
A) involves only chemical transmision
B) is a lower process
C) produces short-term changes
D) has no specific pathway
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The correct answer is C .
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Question 164:
Which of the following is not a transmitable character in plants
Options:
A) Habit of growth
B) Resistance to environmental factors
C) Life span
D) Haemophilia
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The correct answer is D .
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Question 165: In spite of the removal of carbondioxide from the atmosphere, its amount remains more or less constant because
Options:
A) it is produced by green plants during photosynthesis
B) it is produced during respiration of animals
C) it is absorbed inn ocean water
D) green plants release it during the day
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The correct answer is B .
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Question 166: Atmospheric nitrogen is converted to soil nitrogen for plant use by
Options:
A) nitrification and combustion
B) putrefaction and lightning
C) lightning and nitrification
D) combustion and putrefaction
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The correct answer is B .
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Question 167: Rodents gnaw on food with their
Options:
A) molar teeth
B) strong jaws
C) flat-ridged teeth
D) chisel - like front teeth
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The correct answer is D .
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Question 168: Which of the following statements is NOT true of insectivorous plants?
Options:
A) They obtain part of their food by trapping and feeding on insects
B) They attract insects simply because of pollination
C) Thay can grow in soils poor in nitrogenous salts
D) They can supplement their nitrgen supply by feeding on insects
E) Example include butterworts, sundews and pitcher plants
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The correct answer is B .
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Question 169: Which of the following characters is NOT sex-linked?
Options:
A) River blindness
B) Baldness
C) Haemophilia
D) Colour blindness
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The correct answer is A .
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Question 170: Plants that have special devices for trapping and digesting insects are
Options:
A) carnivorous
B) symbiotic
C) parasitic
D) saprophytic
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The correct answer is A .