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 691: The sheet of muscle that separates the thoracic and the abdominal cavities is the
Options:
A) diaphragm
B) intercostal muscle
C) pleural memberane
D) pericardium
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The correct answer is A .
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Question 692: Mammals acclimatize to reduced oxygen content at high altitudes by
Options:
A) the stimulation of marrow to reduce the amount of erythrocytes produced
B) increasing the rate at which erythrocytes are destroyed
C) the stimulation of marrow to produce more erythrocytes
D) increasing the break down of the protein portion of the erythrocytes
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The correct answer is A .
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Question 693: The movement of blood between the heart and all other parts of the body besides the lung is known as
Options:
A) systemic circulation
B) closed circulatory system
C) pulmonary circulation
D) single circulation system
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The correct answer is A .
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Question 694: The flowering period of plants in a habitat is determined by the
Options:
A) duration of sunlight
B) intensity and duration of rainfall
C) relative humidity of the atmosphere
D) temperature of the habitat
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The correct answer is A .
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Question 695: 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 696: Low annual rainfall, sparse vegetation , high diurnal temperatures and cold nights are characteristic features of the
Options:
A) tropical rainforest
B) desert
C) montane forest
D) guinea savanna
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The correct answer is B .
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Question 697: The insects in which the maxillae are modified into a long coiled proboscis is
Options:
A) housefly
B) butterfly
C) mosquito
D) grasshopper
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The correct answer is B .
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Question 698:
Possession of thin membrane enables a tapeworm to
Options:
A) Fasten themselves to the wall of the host's intestine
B) Lay numerous eggs
C) Absorb digested food from the host's intestine to their system
D) Shield themselves inside the host's intestine with anti-enzymes in order to avoid being digested
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The correct answer is C .
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Question 699: The capture and digestion of insects by a pitcher plant is a special form of nutrition termed
Options:
A) autotrophic
B) heterotrophic
C) chemosynthetic
D) saprophytic
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The correct answer is B .
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Question 700: The diseases caused by water-borne pathogens include
Options:
A) gonorrhoea and poliomyelitis
B) typhoid and syphilis
C) tuberculosis and cholera
D) typhoid and cholera
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The correct answer is D .