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Q.

A prothallus is:

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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 fertilization in pteridophytes

answer is C.

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Detailed Solution

A Prothallus is usually the gametophyte stage in the life of a fern or other pteridophyte. The prothallus develops from a germinating spore. It is a short-lived and inconspicuous heart-shaped structure. It is a multicellular gametophyte and autotrophic free-living structure.

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