Explain how buoyant conditions are obtained by aquatic plants.

How does diffusion occur in submerged aquatic plants?

Explain how the following metals are obtained from their compounds by the reducton process: Metal M is in the middle of the reactivity series.

Heroin is obtained from the plant of

Cotton is obtained fom which part of plants ?

The essential functions of roots are anchorage and absorption of water and minerals in the terrestrial plant. What functions are associated with the roots of aquatic plants? How are roots of aquatic plants and terrestrial plants different?

Name the source plant of heroin drug. How is it obtained from the plants?

Explain biomagnification of DDT in an aquatic food chain. How does it affect the bird population?