Assertion: Ramenta are scales which cover young rhizome and leaves of Dryopteris
Reason: Pteridium lacks Ramenta.
A. If both the assertion and reason are through and the reason is the correct explanation to the assertion
B. If both the assertion and reason are true but reason is not the correct explanation to the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and the reason are false

Hint: Dryopteris is a fern plant which belongs to the family Dryopteridaceae family it is mostly seen in Europe, Asia, North America this plant is mostly inhibited in the damp and shady places it has robust appearance. Ramenta are scales which covers the rhizomes and young leaves and it is mostly observed in fern plants.

Complete answer:
Assertion: Ramenta are scales which cover young rhizome and leaves of Dryopteris
As Dryopteris is a robust plant which well structural modification for the survival and development the leaves and rhizomes ( rhizomes are nodes which give out hefty modified stem and roots which are different from the normal roots) are covered by the dry browny scales which is called as Ramenta .
The assertion statement is true.
Reason: Pteridium lacks Ramenta
Pteridium is also a fern plant which produces and small plants and the rhizome and leaves of Pteridium fern plant are covered by simple hair like structures, scales are absent i.e., Ramenta is absent.
The reason statement is true. But it doesn’t explain the assertion
Option A If both the assertion and reason are true and reason is the correct explanation to assertion is not correct
Option B If both the assertion and reason are true but the reason does not explain the assertion it is correct because the reason is not explained as to why Ramenta is seen in the Dryopteris plant.
Option C If assertion is true reason is false this option is not correct because the assertions as well as the reason are true.
Option D If both assertion and reason are wrong this option is not correct. Because the statements are true.
So, the correct answer is “Option B”.

Note:
Dryopteris and Pteridium is a terrestrial plant. They protect the soil from heavy rains and they also help in soil erosion by stomping methods. Dryopteris is mostly used for the treatment of the tapeworm as they have defined metabolism and modified structural arrangement