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Consider the following statements conern...

Consider the following statements conerning food chains
(i) Removal of 80% tigers from an area resulted in greatly increased growth of vegetation
(ii) Removal of most of the carnivores resulted in an increased population of deers
(iii) The length of food chains is generally limited to 3 - 4 trophic levels due to energy loss
(iv) The length of food chains may vary from 2 to 8 trophic levels
Which two of the above statements are correct?

A

A D

B

A,B

C

B, C

D

C, D

Text Solution

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The correct Answer is:
C
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Biosphere is a global ecosystem composed of living organisms and abiotic factors from which they derive energy and nutrients. And ecosystem is defined as structural and functional unit of the biosphere comprising of living and non-living environment that interact by means of food chains and chemical cycles resulting in energy flow, biotic diversity and material cycling to form a stable, self-supporting system Consider the following statements concerning food chains: (i) Removal of 80% tigers from an area resulted in greatly increased growth of vegetation (ii) Removal of most of the carnivores resulted in an increased population of herbivores. (iii) The length of the food chains is generally limited to 3 – 4 trophic levels due to energy loss (iv) The length of the food chains may vary from 2 to 8 trophic levels Which two of the above statements are correct?

Consider the following statements concerning food chain : ( a) removal of 80% tigers from an area resulted in greatly increased growth of vegetation ( b) removal of most of the carnivores resulted in an increased population of deers ( c) the length of food chain is generally limited to 3-4 trophic levels due to energy loss ( d) the length of food chain may vary from 2-8 trophic levels

Study the following statements regarding food chains and select the correct ones. (i) Removal of 80% tigers from an area resulted in greatly increased grwoth of vegetation. (ii) Removal of most of the carnivores resulted in an increased population of deers. (iii) The lenght of food chains is generally limited to 3-4 trophic levels due to energy loss. (iv) The lenght of food chains may vary from 2 to 8 trophic levels.

Which two of the following statements about food chains are correct ? (a) Removal of 80% tigers resulting in increased growth of vegetation. (b) Removal of most carnivores resulted in increased population of deer. (c) Length of food chain is limited to 3-4 tropic levels due to energy loss. (d) Length of food chain may vary from 2-3 tropic levels.

Generally the food chain has how many trophic levels

Discuss the energy flow in a food chain formed of three trophic levels.

PRADEEP-ECOSYSTEM-Multiple choice question
  1. Stability of ecosystem depends upon:

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  2. About 70% of total global carbon is found in

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  3. Consider the following statements conerning food chains (i) Remova...

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  4. Which of the following is considered as pioneer community is xerarch?

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  5. Identify which one of the following is an example of incomplete ecosys...

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  6. In a grassland ecosystem, if the number of primary producers (plants) ...

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  7. It is estimated that about 85% of the Earth's photosynthetic activity ...

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  8. A progressive series of changes in plant and animal life of an area fr...

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  9. Which of the following is an example of man-made ecosystem?

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  10. Identify the correct type of food chain. Dead animal rarr Blowfly m...

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  11. Trophic levels in ecosystem is formed by:

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  12. Select the formula for ecological efficiency:

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  13. The final stable community in ecological succession is:

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  14. In an aquatic ecosystem, the trophic level equivalent to cows in grass...

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  15. Desert, grassland, forests and tundra are the example of:

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  16. Which of the following is a free-living nitrogen fixing bacterium pres...

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  17. Which of the following fixes atmospheric N(2) ?

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  18. Pyramid of energy in a river ecosystem is:

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  19. Which one of the following types of organisms occupy more than one tro...

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  20. Chipko movement was launched for the protection of

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