Question

27 Why do the number of organisms decrease from one trophic level to next
trophic level?

28. Mention one example for each, how do you apply 4R's in your daily life.
anaONT​

Answer 1

Answer:

1.the number of organisms decreasefrom one tropic level to next tropic level it implies that the number of times that an organism of a higher trophic level ingests food increases as you move up the food chain, therefore, there must be more food available from the lower levels so that the required energy is available.

2. we can reduce the use of pollethene bags.

we can give paper for recycling.

we can reuse our old clothes for making different cloth items.

we can recover the daily use items.

Answer 2

Answer:

Firstly, the flow of energy is unidirectional.

The energy that is captured by the autotrophs does not revert back to the solar input and the energy which passes to the herbivores does not come back to autotrophs.

As it moves progressively through the various tropic levels it is no longer available to the previous level.

Secondly, the energy available at each tropic level gets diminished progressively due to loss of energy at each level.

Therefore, the number of organisms decreases from one tropic level to another.