A prothallus is | Filo
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Class 11


Plant Physiology

Plant Kingdom

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A prothallus is

  1. a structure in pteridophytes formed before the thallus develops
  2. a sporophytic free living structure formed in pteridophytes
  3. a gametophyte free living structure formed in pteridophytes
  4. a primitive structure formed after fertilisation in pteridophytes.
Solution: Answer: CSolution: 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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