Upright pyramid of number is absent in

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12.Ecosystem

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The upright pyramid of number is absent in

A

pond

B

forest

C

lake

D

grassland.

(AIPMT-2012)

Solution

(b) :In forests, a single tree can support a large number of birds thus base showing producers in a pyramid of number will be narrower than the next slab showing primary consumers. Hence an upright pyramid of number is not formed in a forest ecosystem.

Standard 12

Biology

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