MCQ
Cardiac muscles are:
- AVoluntary and smooth.
- BVoluntary and striated.
- CInvoluntary and smooth.
- ✓Involuntary and striated.
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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.