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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

II and III

B

III and IV

C

I and IV

D

I and II

Text Solution

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The correct Answer is:
A
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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.

ARIHANT NEET-ECOSYSTEM-Exercises C Medical entrances gallery (collection of questions Asked in NEET & Various Medical Entrance Exams)
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  6. Identify the correct type of food chain.

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  9. Maximum net productivity in terrestrial ecosystem is:

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  10. In an ecosystem bacteria are considered as

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  11. Assertion (A) : A network of food chains existing together in an ecosy...

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  12. Which one of the following regarding ecological pyramid is not correct...

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  13. In a pyramid of numbers in a grassland ecosystem the largest populatio...

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  14. Which of the following is the correct sequence in the food chain?

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  15. Stability of ecosystem depends upon:

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  16. Pyramid of energy in an aquatic ecosystem is

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  17. Extinction of a species in a food chain is compensated by:

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  18. An ecosystem which can be easily damaged but can recover after some ti...

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  19. Maximum biomass of autotrophs in oceans is formed by

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  20. The process of decay of dead organic matter is known as

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