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A Prothallus is...

A Prothallus is

A

a structure in pteridophytes formed be- fore the thallus develops

B

a sporophytic free living structure formed in pteridophytes

C

a gametophyte free living structure formed in pteridophytes

D

a primitive structure formed after fertili- zation in pteridophytes

Text Solution

Verified by Experts

The correct Answer is:
c
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$ A simple but dominant gametophyte is called Prothallus. ! Prothallus is found in Bryophytes.

[A] : In terms , prothallus is club shaped . [R] : Prothallus is derived from club shaped zoosporangia .

A. Companion cells and sieve tubes are absent in pteridophytes. B. Gametophyte of pteridophytes require cool, dry and shady places to grow. C. Prothallus is found in Dryopteris.

Ferm prothallus is developed from

The term prothallus is used for

A ferm prothallus is bisexual. If fertillization takes place between their gemetes then it is known as