Which of the following representations shows the pyramid of numbers in a forest ecosystem?
Correct answer: D. C
- A. D
- B. A
- C. B
- D. C
Explanation
The representation of the forest ecosystem in the pyramid of numbers is always upright because the higher trophic level comprising tertiary consumers is generally smaller than that of the lower trophic levels (i.e., secondary consumer, primary consumer, and primary producer). The pyramid of numbers is inverted in the case of a single tree producer which can provide nourishment to several herbivores such as birds which can further support a larger population of ectoparasites.
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About Man and His Environment
Ecosystems include biotic and abiotic components, food chains and webs, energy flow, nutrient cycles, populations and ecological relationships. Pollution and conservation cover air, water, soil and noise pollution, their effects on organisms, biodiversity loss, protected areas, sustainable resource use and methods for reducing environmental damage.
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