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Q.
Prothallus of petridophytes is
Plant Kingdom
Solution:
In pteridophytes, the prothallus is inconspicuous, small, multicellular, free-living, mostly photosynthetic, thalloid gametophyte which is produced by the germination of haploid spores. These gametophytes require cool, damp, shady places to grow, and bear antheridia, archegonia on their ventral surface.