Question

Pneumatophore roots are present in
A. Mesophytes
B. Xerophytes
C. Hydrophytes
D. Halophytes

Answer 1

Hint: Pneumatophore roots specialized aerial roots which helps the plants to breathe air in those places which are waterlogged soil. These roots grow in both directions either up or down from the stem or typical roots respectively.

Complete Answer:
- These roots have the small pores on the surface which take up air to spongy tissue and this tissue by the mechanism of osmotic spread the oxygen in the whole plant.
- Pneumatophores roots help in finding out the difference in the Black mangrove and Grey mangrove from other mangrove species.
- A very large number of halophytic plants possess the negatively geotropic vertical roots which are known as the pneumatophores.

So, the correct answer Halophytes.

Addition information:
- Aerial roots are those which grow upward direction from the ground and absorb oxygen from the air not from soil.
- There are four types of aerial roots: Stranglers, Pneumatophores, Haustorial, and propagative roots.
- A pneumatophore is one of the three main body parts in a colony of siphonophores in the study of zoology.

Note: The small pores which are present on the surface of roots are known as lenticel. Plants shoot the pneumatophores in soil which is highly salicin and anaerobic for plants and prevent respiration.
In other plants leaves do not help in exchanging the gases for the roots; roots absorb their own gaseous and dissolve from the soil. If soil is blocked the respiration then pneumatophores absorb the oxygen directly from the air.