-->

Plant Growth And Development

Question
CBSEENBI11002790

Which one correctly describe reproduction and life cycle of fern?

  • Spore → Gamete → Prothallus → Sporophyte

  • Gamete → Spore → Prothallus → Plant

  • Prothallus → Sporophyte → Gamete → Fern

  • Sporangia → Spore → Prothallus → Sporophyte → Plant

Solution

C.

Prothallus → Sporophyte → Gamete → Fern

During favourable month sporangia are produced on the underside of the margin of leaves in ferns. After development, it becomes dry and bursts so release spores. These spores germinate on the suitable substrate. Each spore absorbs water, then ruptures and produce gree filament which grows into prothallus (heart-shaped) prothallus develops into young sporophyte which in turn grows into an adult plant.