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In Dryopteris the opening mechanism of s...

In Dryopteris the opening mechanism of sporangium is effectively operated by

A

Stalk

B

Stomium

C

Annulus

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
In Dryopteris, stomium is seen below the annulus and is gradually ruptured as the annulus dries out. It is a structure which help in opening of sporangium and dispersal of spores
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