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Question: Answered & Verified by Expert
A prothallus is
BiologyPlant Kingdom
Options:
  • 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
Solution:
2671 Upvotes Verified Answer
The correct answer is:
a gametophyte free living structure formed in pteridophytes
Prothallus is usually a gametophytic phase in the life of a pteridophyte. Spore germinates to form a prothalium, it is short lived inconspicuous heart shaped structure with a number of rhizoids developed beneath and bears sex organs, archegonium and antheridium.

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