Q14 of 50 Page 476

Which one of the following is an artificial ecosystem?

An artificial ecosystem is a man-made system where there is interaction among plants, animals, and people living in an area together with their surroundings. Examples are crop fields, aquarium.

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12

In the given food chain, suppose the amount of energy at fourth trophic level is 5 kJ, what will be the energy available at the producer level?

Grass → Grasshopper → Frog → Snake → Hawk

 13

Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each higher trophic level is knows as:

 15

In the given figure, the various trophic levels are shown in the form of a pyramid. At which trophic level is maximum energy available and at which trophic level maximum number of organisms are present?

 1

Write true or false for the following statements:

The length and complexity of food chains remain mostly the same.