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Assertion : Biological magnification is ...

Assertion : Biological magnification is increase in concentration of toxic substances at various trophic levels of a food chain.
Reason: Toxic substances accumulated by an organism cannot be metabolized or excreted.  

A

both .A. and .R. are true and .R. is the correct explanation of .A..

B

both .A. and .R. are true and .R. is not the correct explanation of .A..

C

.A. is true but .R. is false.

D

Both .A. and .R. are false.

Text Solution

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The correct Answer is:
A
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KUMAR PRAKASHAN-ENVIRONMENTAL ISSUES-Section - F (Multiple Choice Question (MCQs))(MCQs FROM .DARPAN. BASED ON TEXTBOOK)
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  3. Assertion : Biological magnification is increase in concentration of t...

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  7. How much percent of SO(2) is noted by Gujarat Pollution Control Board,...

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  10. Which method is not used in organic farming ?

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  11. Which chemical is utilized in water to destroy mosquitoes?

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  12. What is the effect of air pollution on crops ?

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  13. Which of the following sentence is differing for the control of increa...

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  14. Which of the following can be done to control global warming ?

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  15. Which of the following is not an inert waste ?   (A) Construction and...

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  16. Which is not included in organic farming ?   (A) Changes in crop ...

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  17. Pollutants from man's activities like effluents from the industries an...

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  18. By which, from the following radiation waste not arises ?

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  19. Which of the following is an example of biodegradable waste ?

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  20. The nearest to the earth : ............: At the height of 50 kms from ...

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