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Biomagnification

The process b...

Question

The process by which any substance which cannot be metabolised by the body, increases in concentration in successive tropical level is called .

A

Biomagnification

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B

Bioremediation

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C

Contour ploughing

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Solution

The correct option is A Biomagnification

Biomagnification is the process in which concentration of toxic substances increases in an organism through different levels in a food chain.

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Q. Which of the following statements is not correct regarding biomagnification?

(i) Mercury accumulated by an organism cannot be metabolised.
(ii) In the process of biomagnification, concentration of DDT is increased at successive trophic levels.
(iii) Accumulation of cadmium can cause thinning of eggshells in birds.
(iv) DDT accumulation is a major cause of a reduced population of fish-eating birds.
(v) Biomagnification occurs only in the aquatic food chain

Q. The increase in concentration of a non-biodegradable substances in successive trophic levels is called biological magnification.

Q. Assertion :Heavy metals and persistent pesticides pass into the food chain and increase in amount per unit weight of the organism at successive trophic levels Reason: Heavy metals and persistent pesticides can be easily metabolised by the organism's body.

Q. The phenomena in which the concentration of the toxicant increases at successive trophic levels in an ecosystem is called as

Q. The increased concentration of harmful toxins in successive trophic levels is called

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