NEET Biology question

BiologyEcosystemNEET

Read the following statements regarding food chains and select the correct ones.

(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 deer (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

Answer: (B)

Solution

Removing carnivores (such as tigers) allows the herbivore (deer) population to increase (ii, true), and since these deer then consume more vegetation, vegetation growth would actually decrease, not increase, making (i) false; the

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Question ID VK-126964