Ecosystem: MCQ Test

Test your comprehensive knowledge of ecosystem structure, function, productivity, decomposition, energy flow, and ecological pyramids, designed for competitive exam preparation.

Test Your Knowledge

Showing questions 41 - 45 of 45

41. Another limitation of ecological pyramids mentioned is that they assume a simple food chain and do not accommodate what?

The concept of producers
Energy loss as heat
A food web
Biomass accumulation

It assumes a simple food chain, something that almost never exists in nature; it does not accommodate a food web.

42. Which organisms are not given any place in ecological pyramids, despite playing a vital role in the ecosystem?

Producers
Consumers
Saprophytes
Herbivores

Moreover, saprophytes are not given any place in ecological pyramids even though they play a vital role in the ecosystem.

43. Based on the exercises, what has the largest population in a food chain?

Producers
Primary consumers
Secondary consumers
Decomposers

According to the exercises, producers have the largest population in a food chain.

44. According to the exercises, what is the second trophic level in a lake ecosystem?

Phytoplankton
Zooplankton
Benthos
Fishes

The second trophic level in a lake is zooplankton.

45. Based on the exercises, secondary producers are:

Herbivores
Producers
Carnivores
None of the above

The exercises indicate 'None of the above' as the correct answer for 'Secondary producers are'. Secondary productivity is defined as the rate of formation of new organic matter by consumers, which are heterotrophs, not typically called 'secondary producers' in the same sense as autotrophs are 'primary producers'.

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