First slide

The Root

Question

Assertion (A) : Root cap region and meristematic regions are seen in mature embryonal stage of an angiospermic seed.
Reason (R) : During embryogeny the apical meristem of root is demarcated after globular stage and covered by root cap formed from hypophysis ( the last cell of suspensor).

Difficult

A

Both assertion and reason are correct and reason is correct explanation for assertion.
B

Both assertion and reason are correct and reason is not correct explanation for assertion.
C

Assertion is correct and reason is incorrect.
D

Assertion is incorrect and reason is correct.

Solution

At the entry of globular stage of angiospermic embryo, the hypophysis cell of pro-embryo acts as root cap initial and after globular stage the radicle with root apical meristem and plumular region with one or two cotyledons are differentiated to form cordate stage of embryo. At maturity the embryo has well organised root cap covering the apical meristem present in radicle.

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