Question : Comment on the life cycle and nature of a fern prothallus.

1.	Question : Comment on the life cycle and nature of a fern prothallus.
Answer» Solution :• The LIFE cycle of Nephrolapis (Dryopteris) clearly shows alternation of GENERATION. Gametophytic stage (N) comes with alternation of sporophytic stage (2n). Diagram shows complete life cycle. • Prothallus : The prothallus of Fern is multicellular, free living, thallces type, HAPLOID and autotrophic structure. It is produced from spores which are proceed meiotically in sporophyte. These spores geminate with precell germ tube and possesses 3-6 cellular filbrous structure and tube and are or TWO Rhizoids which later on develops into gametophyte.

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