the heart shaped form of prothallus represents
1 dioecious
2 monoecious
sporophyte
3 monoecious gametophyte
4 none of the above
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Answer:
The heart shaped prothallus represents monoecious gametophyte.
Explanation:
Prothallus is gametes producing (gametophytic) stage of fern plant formed due to mitotic division of spores in the sporophytic stage of fern.
They are tiny, green, heart shaped, and photosynthetic structure about 1 mm thick, 3 to 10mm in length and 2 to 8mm broad.
It is not differentiated into root, stem and leaf. However, they consists of rhizoids that go deep into the soil to absorb water and minerals for them.
Prothallus has both organ female rgans(archaegonium) and female (antheredium) in same individual i.e the stage is called monoecious.
The male organ produces male gametes while female organ produces female gamete.
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