Students set up an experiment as illustrated below.
(a) Name the physiological process that resulted in the observation made after 30 minutes.
(b) State the importance of the physiological process investigated in plants.
(c) Explain the observation made after 30 minutes.
Answer:
a) Osmosis
b)- Absorption of water from the soil by the root hair cells
- Provide support in seedling, leaves and herbaceous plants, when parenchyma cells are turgid.
- Opening and closing of stomata
- Distribution of water from cell to cell.
- Feeding in insectivorous plants
c)- Sucrose solution increased in volume and rose in the thistle funnel while distilled water in the beaker reduces since sucrose solution is hypertonic compared to distilled water. Water molecules move by
osmosis across semi-permeable membrane into the funnel.