MCQ
Ulothrix can be described as a:
- ANon$-$motile colonial alga lacking zoospores.
- BFilamentous alga lacking flagellated reproductive stages.
- CMembranous alga producing zoospores.
- ✓Filamentous alga with flagellated reproductive stages.
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$(i)$ Contractile vacuole takes part in osmoregulation and excretion.
$(ii)$ Food vacuole is formed by engulfing the food particles.
$(iii)$ The vacuole is bound by a double membrane called tonoplast.
$(iv)$ Vacuole can occupy upto $90$ percent of the volume of the cell.