1.

A given species may occupy more than one trophic level in the same ecosystem at the same time. Explain with an example

Answer»

A snake eating a mouse in a field/lawn occupies the third trophic level in the food chain.
Plants → Mice → Snake

When the snake eats frog in the same field, it occupies the 4th trophic level in a food chain it is because the frog feeds on some of the insects which depends on the plants.

Plants → Insects → Frog → Snake

Thus in the same ecosystem one animal (snake) occupies more than one trophic level at the same time as it cannot satisfy its food need from one trophic level.



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