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MODEL PAPER 2 — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYMODEL PAPER 21 Mark
MCQ
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 fertilization in pteridophytes.
✓

Answer

(c) A gametophyte free-living structure formed in pteridophytes.
Explanation: A gametophyte free-living structure formed in pteridophytes which is of short duration.

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