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Female gametophyte in heterosporous fern...

Female gametophyte in heterosporous ferns is

A

Archegonium

B

Prothallus

C

Protonema

D

Megasporangium

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The correct Answer is:
D
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  14. Which one of the following is a vascular cryptogam?

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  18. A prokaryotic autotrophic nitrogen fixing sym- biont-is found in

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  19. Archegoniophore is present in

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