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Question

The upright pyramid of number is absent in

A
Lake
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B
Grassland
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C
Pond
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D
Forest
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Solution

The correct option is D Forest
Pyramid of numbers represents the number of individuals per unit area at various trophic levels. It is always upright in grassland, pond and lake ecosystems. But in a forest, it is a partly upright pyramid of numbers because the number of producers are lesser in number and support a greater number of herbivores and which in turn support a fewer number of carnivores.

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