Question

give a brief account of prothallus?

Answer 1

Prothallus of Ferns : (a) It is a heart shaped structure. The sex organs are present on the lower surface of the prothallus below the apical notch.
(b) Sex organs are antheridia and archegonia. Prothallus is produced from the meiospore as gametophyte of fern.
© Below the sex organs are rhizoids.
(d) Archegonia are flask shaped but antheridia are globose.
(e) Male and female gametes are produced in antheridia and archegonia.

Prothallus of Ferns : (a) It is a heart shaped structure. The sex organs are present on the lower surface of the prothallus below the apical notch.
(b) Sex organs are antheridia and archegonia. Prothallus is produced from the meiospore as gametophyte of fern.
© Below the sex organs are rhizoids.
(d) Archegonia are flask shaped but antheridia are globose.
(e) Male and female gametes are produced in antheridia and archegonia.



Answer 2

HLO MATE HERE IS UR ANSWRER

❤. PROTHALLUS ❤

⭐. The gametophytic plant body of pteridophytes is called 'prothallus '.

⭐. The haploid spores germinates and gives rise to prothallus.

⭐. It is a heart shaped thallus like structure ,green ,dorsiventral with a notch .

⭐. The rhizoids produced on ventral surface are unicellular.

⭐. Prothallus grows on shady ,damp and wet soil.

⭐. Male sex organs antheridia are produced on the lower part of prothallus.

⭐. Female sex organs archegonia are produced near the notch.

⭐. The antherzoids are ciliated ,requir ewater to reach the egg.

⭐. The zygote develops into an embryo ,which develops into a deploid sporophyte with in the female gametophyte.