Question

An inverted pyramid of biomass can be found in which ecosystem
(A) Forest
(B) Marine
(C) Grassland
(D) Tundra

Answer 1

Hint: In this ecosystem, the major producers, at any given point will be lower than the mass of the heterotrophs. It may be deep or shallow in size. It covers about 70% of earth’s surface.

Complete answer:
1.The biomass pyramid shows the interconnection between the biomass and trophic level.
2.A marine ecosystem consists of phytoplanktons as the producers, zooplanktons as primary consumers and small fishes and big fishes as secondary and tertiary consumers respectively.
3.The phytoplanktons are smallest in size and hence their biomass is least.
4.As we go higher up the trophic level, the biomass gradually increases.
Therefore, the inverted pyramid of biomass can be easily found in the marine ecosystem.

5.The trophic structure is characteristic of each ecosystem.
6.The trophic structure and function at successive trophic levels can be graphically shown by ecological pyramids.
7.There are three types of ecological pyramids: pyramid of numbers, pyramid of biomass and pyramid of energy.
8.There is a great possibility, pyramids of numbers and biomass upright or inverted. It depends upon the food chain arrangement in the specific ecosystem. But one thing is considerable; the pyramid of energy is always upright.

Hence, the correct answer is option (B)

Note: 1.In a marine ecosystem, the pyramid of numbers is upright.
2.Biomass is the measurement of the total quantity/weight of organisms in a specified area or volume.
3.Biomass is used to express standing crops.