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NEET UG BIOLOGY MCQ: ECO SYSTEM
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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 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?
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?
View answer and explanation
Correct option: A
(ii) and (iii)
Option A ((ii) and (iii)) is correct because the removal of carnivores increases deer population, and energy loss limits food chain length.
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II. According to this law, during the transfer of food energy from one tropical level to the other, only about 10% is stored at higher trophic level and the remaining 90% is lost in respiration, decomposition and waste in the form of heat
Which of the statements given above is/are correct?
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