Entry of pollutants into a food chain is ………
A) Bio-accumulation
B) Bio-magnification
C) Bio-mass
D) Bio-degradation
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The muscular flap like valve that prevents entry of food into respiratory tract
(D) Epiglottis
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The reason for entry of air into stomata.
(D) Density of more O2
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The process of increasing concentration of chemicals through the food chain is known as
C) biomagnification
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Identify the correct matching from the following. 1) Biomagnification – Food chain
Correct option is D) 1 only
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Cockroaches are considered as a part of food chain. Justify.
Many amphibians, birds, lizards and rodents prey upon cockroaches and this makes them a part of food chain. They are also eaten by certain groups of people in South America,...
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The missing organism in food chain of grass → ? → frog → snake is :
(A) Grasshopper
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Many pollutants are released into water from an industrial area. If residue appears in living
D) Bio magnification
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The physiological disorder due to accumulation of heavy metals into human beings through food chain is
A) Renal damage
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Assertion : All chemicals added to food items are called food preservatives. Reason : All these chemicals increase the nutritive value of the food.
(iii) Both assertion and reason are wrong statement.
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Name an omnivore which occurs in both grazing food chain and the decomposer food chain.
Sparrow/crow.
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