Question

Pneumatophores are found in

• A. the vegetation which is found in marshy and saline lake
• B. the vegetation which found in acidic soil
• C. xerophytes
• D. epiphytes.

Answer 1

The Correct Option is A

These special roots, called pneumatophores or knees, develop in mangrove plants, i.e.% plants growing in saline marshes. These roots grow vertically upward and are negatively geotropic. Air enters these roots through minute breathing pores called pneumathodes, present on the tips of vertical roots. These plants include Rhizophora, Heritiera, Avicinnia, etc., and are found in Sundarbans of West Bengal.

Answer 2

Pneumatophores are found in the vegetation of marshy and salty lakes. These specialized aerial roots assist plants in breathing air in soggy soil. In some species, these roots are pencil-sized and peg-like, but in others, they resemble a knee. These roots contain many holes that allow oxygen to enter the tissues beneath.
Plants that favor acidic soil are known as calcifuge plants. Erica, Rhododendron, and practically all other Ericaceae species, as well as numerous birches (Betula), foxglove (Digitalis), gorse (Ulex spp.), and Scots pine (Pinus sylvestris), are among them. In acidic soil, the groundcovers pachysandra and wintergreen, as well as all varieties of ferns, thrive.

Answer 3

Pneumatophores are found in the vegetation of marshy and salty lakes. These specialized aerial roots assist plants in breathing air in soggy soil. Lenticels on the surface of these roots aid in the absorption of air into spongy tissue, which then distributes oxygen throughout the plant as needed. It is a form of root that grows in a negatively geotropic manner in order to absorb oxygen from the air. They are pencil-shaped roots that protrude from the thick, damp earth-like snorkels.