Question

Unnikrishnan had a pond with fish. He started rearing ducks and observed that the fish yield increased eventually. Can you identify the logical reasons behind this?

• A. Bird droppings act as manure for aquatic plants
• B. More food in the form of aquatic plants is available to fish.
• C. Small insects growing in pond become food for birds
• D. Fish eat the bird droppings directly.

Answer 1

Answer: (A), (B), (C)

The correct options are
A

Bird droppings act as manure for aquatic plants

B

More food in the form of aquatic plants is available to fish.

C

Small insects growing in pond become food for birds

This type of farming where agriculture and cattle rearing are done together is called integrated farming. In this case of integrated farming, fish and duck which are reared together. The duck droppings act as manure for the aquatic plants. The aquatic plants become food for the fish. Also, some insects, larvae, flies will grow in the pond which becomes food for the duck.