Question : How far does Selaginella one of the few living members of Lycopodiales (pteridophytes) fall short of seed habit ?

Question : How far does Selaginella one of the few living members of L

1.	Question : How far does Selaginella one of the few living members of Lycopodiales (pteridophytes) fall short of seed habit ?
Answer» Solution :•Seed Habit : DIFFERENT forms of microspores and megaspores and dependency on PARENT sporophyte for nutrition are some of the characteristics of selaginella which is necessary for seed formation fuitially. •In selaginella, evoulation of heterospories and seed form and following characteristics are its evidence : (i) Each sporophyte maintains only one active MEGASPORE. (ii) Development of protective layer and nutritive tissue TAPETUM is present. (III) Development of Embryo sac in sporangia. (iv) Maintenance and germination of Megaspore in Megasporangia. (v) To absorb pollengrain transformation at far end of megasporangium. (vi) Siphonogamy and Pollination (vii) Embryo development stops for short period (Dormancy Period)