breif account on prothallus
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Answer:
A prothallium, or prothallus is usually the gametophyte stage in the life of a fern or other pteridophyte. Occasionally the term is also used to describe the young gametophyte of a liverwort or peat moss as well.
The prothallium develops from a germinating spore. It is a short-lived and inconspicuous heart-shaped structure typically 2–5 millimeters wide, with a number of rhizoids (root-like hairs) growing underneath, and the sex organs: archegonium (female) and antheridium (male). Appearance varies quite a lot between species. Some are green and conduct photosynthesis while others are colorless and nourish themselves underground as saprotrophs.
Answer: The spore from the sporophyte of pteridophyte germinate on moist soil to give raise to small , inconspicuous but multicellular mostly photosynthetic , thalloid, free living , haploid , cordate or heart shaped gametophyte called prothallus. It requires cool damp and shady places to grow.
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