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Q.
Which of the following representations shows the pyramid of numbers in a forest ecosystem?
AIPMTAIPMT 2010Ecosystem
Solution:
In a forest ecosystem, a single large sized producer like tree provide food to several herbivores, e.g., birds, in turn these small sized herbivorous birds are usually eaten by falcon or eagle. The number of eagle is, however very small. Thus, the pyramid of number obtained from this kind of relationship is spindle shaped.