Osmosis — task. Biology CBSE Live product, Class 9 (2025-26).

Select the most suitable answer:

1. Water enters the root hairs mainly because _________

semi-permeable membrane blocks water movement
root hairs push water inside
soil water has higher water concentration than root cell sap
xylem pulls water from the soil

2. Osmosis will stop even if water molecules keep moving across the membrane when _________.

the membrane becomes fully permeable to solutes
solute concentration becomes equal on both sides
energy supply to the cell decreases
water molecules stop moving

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