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In the aquatic, food chain consisting of crane, phytoplankton, tadpoles and fish, the position of crane is _________.
1. IV trophic level
2. II trophic level
3. I trophic level
4. III trophic leve

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Correct Answer - Option 1 : IV trophic level

The correct answer is IV trophic level.

  • In this aquatic food chain, the crane will be at IV trophic level.
  • phytoplankton → tadpoles → fish → crane 

  • The food chain describes who eats whom in an ecological community.
  • The food chains, food webs help us understand how changes to ecosystems say, removing a top predator or adding nutrients affect many different species, both directly and indirectly.
  • Phytoplankton and algae form the bases of aquatic food webs. They are eaten by primary consumers like zooplankton, small fish, and crustaceans.
  • Primary consumers are in turn eaten by fish, small sharks, corals, and baleen whales.
  • Top ocean predators include large sharks, billfish, dolphins, toothed whales, and large seals. Humans consume aquatic life from every section of this food web.

  •  The food chains are:
    • ​Producers.
    • Primary consumer.
    • Secondary consumer.
    • Top predators.
  • Aquatic food web:
    • ​Plankton: They are microscopic plants and animals whose movements are largely dependent upon currents. Plankton is the foundation of the aquatic food web.
    • Phytoplankton: Plant plankton are called phytoplankton and may be single cells or colonies.
    • Zooplankton: Animal plankton is called zooplankton. Zooplankton can move on their own, but their movement is overpowered by currents.

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