Question

What can be modified to form air cavities in aquatic plants?

Answer 1

Aerenchyma:

1. The aerenchyma tissues are sponge-like tissues which create air channels in the leaves, the stem of the plants, and allow gases to transport.
2. The aerenchyma tissues are type of parenchymatous tissue which is a permanent tissue in plants.
3. The main function of these tissues is to store food & provide nutrition to the plant parts.
4. The aerenchyma tissue is characteristic feature of aquatic plants.
5. It provides buoyancy to the plants which below them to float, and also helps in the exchange of gases for respiration.

Thus, aerenchyma tissues can be modified to form air cavities in aquatic plants.