FSC Biology MCQs

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[question]
Animals that produce metabolic heat at low level and also absorb heat from the surroundings are called
A. Endotherms B. Ectotherms
C. Heterotherms D. Homeotherms
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[explanation]c[/explanation]
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[question]
Bats & humming birds belong to
A. Endotherms B. Ectotherms
C. Heterotherms D. Homeotherms
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[explanation]c[/explanation]
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[question]
Brown fat present in certain mammals is specialized in
A. Providing insulation in cold environment. B. Providing insulation in hot environment
C. Rapid heat production. D. Controlling heat production.
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[explanation]c[/explanation]
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[question]
Thermostat of human body is present in
A. Fore brain. B. Hind Brain.
C. Thalamus. D. Hypothalamus.
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[explanation]d[/explanation]
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[question]
Production of pyrogens is a ________ phenomenon
A. Protective B. Destructive
C. Constructive D. Aggressive
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[explanation]A[/explanation]
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[question]
Which of the following is most toxic?
A. Ammonia. B. Urea
C. Uric acid D. Trimethylamine oxide
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[explanation]A[/explanation]
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[question]
Amount of water required to excrete 1gN of Urea is
A. 1 ml B. 50 ml
C. 100 ml D. 150 ml
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[explanation]b[/explanation]
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[quiz]
[question]
Hydra has no specialized excretory system because
A. It does not produce waste material B. Due to absence of mesoderm
C. The whole body cells are in contact with water D. It has pseudocoelom.
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[explanation]c[/explanation]
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[question]
The nephridia of earthworm open into the coelom by
A. Nephrostome B. Nephridiopore
C. Flame cell D. Anus
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[explanation]A[/explanation]
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[question]
The distal blind end of the malpighian tubules bathes freely in
A. Digestive tract B. Intestines
C. Haemocoel D. Coelom
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[explanation]c[/explanation]
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