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A prothallus is...

A prothallus is

A

a structure in pteridophytes formed before 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 fertilisation in pteridophytes.

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The correct Answer is:
C
Prothallus is a small flattened multicellular structure that represent the independent gametophyte generation in pteriodophytes, e,g., club mosses, horsetails and ferns. In some of the pteridophytes a single prothallus bears both male and female sex organs. In others, there are separate male and fenale prothalli.
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