NEET BIOLOGY

Detailed explanation-1: -The haploid stage begins when a spore undergoes mitosis to create multiple haploid cells called the gametophyte. The gametophyte is heart shaped and about the same size as a fingernail. The gametophyte develops male and female structure that produce eggs and sperm called gametangia.

Detailed explanation-2: -prothallium, the small, green, heart-shaped structure (gametophyte) of a fern that produces both male and female sex cells (gametes). The prothallium forms from a spore.

Detailed explanation-3: -Gametophyte (prothallus) The prothallus is the fern gametophyte. It is a green, photosynthetic structure that is one cell thick, usually heart or kidney shaped, 3–10 mm long and 2–8 mm broad.

Detailed explanation-4: -The prothallus develops from a germinating spore. Complete answer: Prothallium or prothallus is typically the gametophyte stage within the life cycle. The prothallus develops from a germinating spore.

Detailed explanation-5: -Reproduction by Spores Plants we see as ferns or horsetails are the sporophyte generation. The sporophyte generally releases spores in the summer. Spores must land on a suitable surface, such as a moist protected area to germinate and grow into gametophytes.