Question

In an aquatic/ water/ pond food chain: aquatic plants⇢ small fish⇢ big fish⇢ crane.

1. Write the trophic levels of crane (water bird) and plants.
2. Name the organisms that are secondary consumers.

Answer 1

Trophic level:

1. The transfer of energy from one organism to another is called the food chain.
2. The level each organism occupies in a food chain is called a trophic level.

Crane:

1. The crane (water bird) occupies the fourth trophic level.
2. Crane is the tertiary consumer in the food chain.

Plants:

1. The plants are at the first trophic level.
2. Plants are the producers of the food chain as they can synthesize food.

Secondary consumers:

1. The secondary consumers rely on the primary consumers for food and energy.
2. Big fish is the secondary consumer.