Question

Identify the correct pair of plants which produce pneumatophores
A. Heritiera fomes and Dahlia hybrida
B. Heritiera fomes and Ceriops roxburghiana
C. Ceriops roxburghiana and Asparagus racemosus
D. Tinospora cordifolia and Ipomoea batatas

Answer 1

Pneumatophores are the structures which protrude out from the root of plants living in the aquatic habitat to ensure the process of aeration required by the roots to function. Sort out the plants living in the aquatic habitat to get the answer.

Complete answer: The plants which grow in the areas where when excess rainfall occurs the waters gets logged near the plant and it becomes difficult for the plant roots to get the proper aeration so, those plants have adapted themselves in such a way that there roots have developed certain structures which remain above the water level even when the water is logged so as to provide proper ir to the roots to function. These structures are known as the pneumatophores.
We can get an idea that the plants growing near the sea or rivers often get subjected to these conditions due to the monsoon water and high tides. So as we know that the plants which grow in the saline conditions or marine conditions are known as Halophytes and the plants growing near the river sides are known as the mangroves. These plants are standing above the ground at a certain height due to pneumatophores and it looks like a mesh of stems. Amongst the given options only the option b have halophytic plants and thus it is our answer.
Discussing the other options, the Dahlia plant is a flowering plant which is generally grown in the gardens inside our houses and the flowers are of various colours making a beautiful appearance. The plant Heritiera, whose common name is Sundari is known for growing in the mangrove ecosystems and thus potential answer to our question.
So, the correct answer is “Option b”.

Note:
All the options which were provided to us except for the Heritiera and Ceriops, are of the common household plants which are known to either produce flowers or are beneficial for human health. The flowering plants always require freshwater for their growth and thus they are never found near the saline environments where the waterlogging conditions occur. The roots of these plants aerates itself with the air pores present in the soil.