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In addition to wheat plants, a crop fiel...

In addition to wheat plants, a crop field ecosystem has organisms such as snake, peacock, eagle and mice. If the weat plants are sprayed with pesticides periodically, which of the following will have the minimum concentration of pesticides in the body ?

A

snake

B

eagle

C

mice

D

peacock

Text Solution

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The correct Answer is:
C
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Read the following passage Human body is made up of five important components, of which water is the main component. Food as well as potable water is essential for every human being. The food is obtained from plants through agriculture, Pesticides are being used extensively for a high yield in the fields. These pesticides are absorbed by the plants from the soil along with water and minerals and from the water bodies these pesticides are taken up by the aquatic animals and plants. As these chemicals are not biodegradable, they get accumulated progressively at each trophic level. The maximum concentration of these chemicals gets accumulated in our bodies and greatly affects the health of our mind and body. Various steps in a food chain represent:

LAKHMIR SINGH & MANJIT KAUR-OUR ENVIRONMENT-Exercise
  1. If the energy available at the producer level in a food chain is 150 J...

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  2. If the energy transferred to a tertiary consumer in a food chain is 10...

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  3. In addition to wheat plants, a crop field ecosystem has organisms such...

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  4. Which of the following is the best method to dispose of biological was...

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  5. In an ecosystem : (i) the flow of energy is unidirectional (ii) ...

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  6. The ten per cent law is associated with

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  7. The harmful chemical which is accumulating in human beings through foo...

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  8. O(2) is converted into O(3) by the action of :

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  9. Which of the following cannot be added in a composting pit to prepare ...

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  10. The gas A is used by most of the animals to obtain energy from food by...

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  11. The surface of water in a lake appears green due to a layer of tiny fr...

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  12. A forest ecosystem having a lot of green plants has some foxes, lions ...

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  13. A food chain consists of fish, larvae , phytoplanktons and birds. The ...

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  14. Why are some substances biodegradable and some non-biodegradable?

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  15. Give any two ways in which biodegradable substances would affect the e...

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  16. Give any two ways in which non-biodegradable substances would affect t...

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  17. What are tropic levels ? Give an example of a food chain and state the...

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  18. What is the role of decomposers in the ecosystem?

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  19. What is ozone and how does it affect any ecosystem?

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  20. How can you help in reducing the problem of waste disposal? Give any t...

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