NTA Abhyas NEET2020BotanyPlant KingdomPractice
Bryophytes comprise of
Options
- Aa sporophyte which is of longer duration.
- Ba dominant phase of sporophyte which is parasitic
- Ca dominant phase of gametophyte which produces spores.
- Da small sporophyte phase which is generally parasitic on the gametophyte.
Correct answer
D. a small sporophyte phase which is generally parasitic on the gametophyte.
Step-by-step solution
In Bryophytes, sporophyte is never independent but is parasitic over gametophytic plant either partially for water and mineral supply or wholly for organic food. The sporophyte is not free-living but attached to the photosynthetic gametophyte and derives nourishment from it. Some cells of the sporophyte undergo reduction division (meiosis) to produce haploid spores. These spores germinate to produce gametophyte. A dominant, independent, photosynthetic, thalloid or erect phase is represented by a haploid gametophyte