Question

construct an aquatic food chain showing four trophic level

Answer 1

Answer:

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Answer 2

Answer:

Food chain which occurs in an aquatic ecosystem is known as aquatic food chain.

Explanation:

• Food chain is a sequential and linear presentation of flow of nutrients and energy from organism of basic trophic level i.e. producer till the last trophic level of tertiary consumer.
• A food chain follows a specific path unlike food web in which, there is a series of chain of organisms and it does not follow a single pathway but, there are multiple pathways.
• Food chain which occurs in an aquatic ecosystem is known as aquatic food chain.
• There are four trophic levels in an aquatic food chain –

1. Producers – first trophic level. Ex – plankton, phytoplankton.
2. Primary consumers – second trophic level. Ex – zooplankton.
3. Secondary consumers – third trophic level. Ex – small fishes.
4. Tertiary consumers – fourth trophic level. Ex – shark.

• After every level, heat loss occurs and a small amount of energy is also lost while moving from one trophic level to another.
• That is why, producers have the maximum energy whereas, tertiary consumers have the lest energy in any food chain.

This is a flow chart presentation of an aquatic food chain.

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