Question

Pneumatophores are found in
A) Orchid
B) Piper
C) Ficus
D) Rhizophora

Answer 1

Hint: Pneumatophores are the modification of the roots. They are also known as breathing roots. These roots are found in swampy areas. These roots are found in mangrove plants.

Complete answer:
Pneumatophores are breathing roots. They are found in the plants which grow in the marshy or swampy regions. These roots grow vertically upward so as to absorb oxygen in the saline water-logged environment. These aerial roots can grow down from the stem or up from the roots. The surface of these roots has lenticels which help in the exchange of gases. The mangrove plants like Rhizophora have these types of roots. In this case, the roots grow downward from the stem.

Orchids- The orchids have aerial roots. The roots are covered with velamen which acts like sponges and absorbs water. It absorbs water and transports to stele.

Piper- The root present in piper is the climbing root. These roots are found in plants that have weak stems. They help the plant to climb by providing support.

Ficus- The root present in the Ficus is prop root. These roots grow from the branches to the ground and act like trunks. These roots provide support to the branches.

Thus the correct answer is option ‘D’.

Note: The main function of the root is to absorb water and minerals from the soil. It also helps in holding the plant firmly into the soil. The root system of the plants living in arid conditions are well developed and penetrate deep inside the soil for water. The plants which live in moist conditions do not have penetrative roots.