Q19 / 180 · JIPMER 2017 · Botany
Which one correctly describe reproduction and life cycle of fern?
- ASpore $\rightarrow$ Gamete $\rightarrow$ Prothallus $\rightarrow$ Sporophyte
- BGamete $\rightarrow$ Spore $\rightarrow$ Prothallus $\rightarrow$ Plant
- CProthallus $\rightarrow$ Sporophyte $\rightarrow$ Gamete $\rightarrow$ Fern
- Correct answerDSporangia $\rightarrow$ Spore $\rightarrow$ Prothallus $\rightarrow$ Sporophyte $\rightarrow$ Plant
Solution
During favourable month sporangia are produced on the underside or margin of leaves in ferns. After development, it become dry and bursts to release spores. These spores germinate on the suitable substrate. Each spore absorb water, then ruptures and produce green filament which grow into prothallus (heart-shaped). Prothallus develops into young sporophyte, which in turn grows into an adult plant.
Hence, the correct answer is option: 'D'.