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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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1. Prothallus is a small flattened multicellular structure that represents the independent gametophyte generation in pteridophytes.
2. Pteridophytes include club mosses, horsetails, and ferns.
3. In some pteridophytes, a single prothallus bears both male and female sex organs.
4. In other pteridophytes, there are separate male and female prothalli.
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Question Text | 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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Topic | Plant Biology |
Subject | Biology |
Class | Class 12 |
Answer Type | Text solution:1 |