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[A] : The presence of endothelium around...

[A] : The presence of endothelium around the embryo sac and its cytological features sugest that it may be functionally similar to the anther tapetum .
[R] : For this reason endothelium is also called integumentary tissue .

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

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