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 51: What will happen wen two equal sized pieces of unripe pawpaw labelled X and Y are dropped into equal volumes of concentrated salt solution and distilled water respectively?
Options:
A) pawpaw X will become turgid
B) both will increase in size
C) pawpaw Y will become turgid
D) both will decrease in size
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The correct answer is C .
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Question 52: An increase in air pressure in the lungs is due to the
Options:
A) increase in the volume of the thoracic cavity
B) upward movement of he ribs
C) relaxation of the diaphragm
D) contraction of the intercostal musles
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The correct answer is C .
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Question 53:
The gland usually found in the position labelled I is the
Options:
A) adrenal
B) thyriod
C) pancreatic
D) pituitary
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The correct answer is D .
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Question 54: Which of the following is the lowest category of classification?
Options:
A) class
B) species
C) family
D) genus
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The correct answer is B .
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Question 55: Yeast respires anaerobically to convert simple sugar to carbon (IV) oxide and
Options:
A) alcohol
B) acid
C) oxygen
D) water
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The correct answer is A .
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Question 56: Which of the following insects has an incomplete metamorphosis during its life circle?
Options:
A) Butterfly
B) Bee
C) Mosquito
D) House-fly
E) Grasshopper
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The correct answer is E .
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Question 57: The part of the mammalian ear responsible for the maintenance of balance is the
Options:
A) cochlea
B) pinna
C) perilymph
D) vestibular system
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The correct answer is D .
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Question 58: Bacteria inhabiting legume root nodules and which add atmospheric nitrogen to the soil are referred to as
Options:
A) Denitrifying bacteria
B) Nitrifying bacteria
C) Nitrogen fixing bacteria
D) Nitrogen freeing bacteria
E) Nitrogen putrefying bacteria
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The correct answer is C .
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Question 59: If a nursing mother is not producing enough milk, her hormonal system is probably deficient in
Options:
A) prolactin
B) testosterone
C) thyroxin
D) insulin
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The correct answer is A .
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Question 60:
The process of walking is under the control of the part of the brain called
Options:
A) optic lobe
B) olfactory lobe
C) cerebellum
D) medulla oblongata
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The correct answer is C .