Question

Assertion:- The two cotyledons in seed are the embryonic leaves.
Reason :- The embryo contains radical and plumule.
A.Both assertion and reason are correct, Reason is the correct explanation of assertion.
B.Both assertion and reason are correct, Reason is not the correct explanation of assertion.
C.Assertion is correct, reason is incorrect
D.Both assertion and reason are incorrect.

Answer 1

Hint: The seed bearing plants and the angiosperm are classified into two categories that are monocots and the dicot plants . plants which have only one cotyledon are known as monocot plants whereas plants with two cotyledons are known as dicot plants.

Complete step by step answer:
1 :- Cotyledon is the most important part of the embryo or the growing seed, cotyledon provides nutrition to the embryo for its growth and development.
2 :- These cotyledons are also known as the embryonic leaves and they are the first leaves of the embryo which develops during the germination of the seed. The number of the embryonic leaves depends on the number of cotyledons in the seed.
3 :- These leaves are present within the seed during germination, the cotyledons open like a flap so they are known as the embryonic leaves.
4 :- Also the embryonic development has plumule and the radical, the plumule develops in the shoot part of the plant whereas the radicle develops into the root part of the plants.
3 :- During its development the embryo first develops only the plumule and the radicle, these are the vital parts of the embryo if the cells of the plumule and the radicle got damaged then then the seed will not grow in the plant as the root and shoot growing part is damaged.
Here both assertion and reason are true, but reason is not the correct explanation of the assertion.

So option B is correct.

Note: Always the embryonic leaves lie between the embryonic shoot and the embryonic root.