Question

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

Answer 1

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.