Question

In the heavy rain monsoon season, certain low land plants which remain in flooded and water logged areas are subjected to wilting (death), the main reason for this is
A. Mineral nutrients absorption gets blocked.
B. Water absorption does not take place.
C. Root tip meristems disintegrate.
D. roots are not able to exchange gases between soil and living cells of roots.

Answer 1

The term "monsoon" was originally used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal oscillation of the Intertropical Convergence Zone between its limits to the north and south of the equator, but it is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal oscillation of the Intertropical Convergence Zone between its limits to the north and south of the equator.

Complete answer:
The wet season is known as the monsoon season in areas where heavy rainfall is associated with a wind shift. Monsoon rainfall patterns can be found in many tropical and subtropical climates. Rainfall in the wet season is primarily caused by daytime heating, which results in diurnal thunderstorm activity within a pre-existing moist air mass, so the rain falls primarily in the late afternoon and early evening.
Furthermore, before storms mature into their stratiform stage, much of the total rainfall each day occurs in the first minutes of the downpour. Because the monsoon trough, or Intertropical Convergence Zone, can pass over locations in the tropics twice per year, areas in the tropics can have two wet seasons. Rainforests, on the other hand, receive rainfall.
Diffusion is the process by which gases are exchanged in a plant's roots. Diffusion occurs when oxygen passes through the root hairs and into the root cells, where carbon dioxide is released into the soil.
In the heavy rain monsoon season, certain low land plants which remain in flooded and water logged areas are subjected to wilting (death), the main reason for this is roots are not able to exchange gases between soil and living cells of roots.

Thus, the answer is option D: roots are not able to exchange gases between soil and living cells of roots.

Note: In mountainous areas, heavy rains can cause widespread flooding, which can lead to landslides and mudflows. Rivers burst their banks and submerge homes during such floods. The Ghaggar-Hakra River, which only flows during the monsoon season in India, has the potential to flood and destroy local crops.