Question

Which of the following statements are true/false?

a. The positive hydrostatic pressure is called turgor pressure.

b. Wall pressure is exerted to prevent the increase of protoplasm size.

c. Diffusion is more rapid in liquids than in gases.

d. Diffusion of water through a semi-permeable membrane is called imbibition.

e. Osmosis is the movement of substances which occurs along a diffusion gradient.

• A. a, b are true, and c, d, e are false.
• B. a, e are true, and b, c, d are false.
• C. a, c are true, and b, d, e are false.
• D. a, d are true, and b, c, e are false.

Answer 1

The correct option is A

a, b are true, and c, d, e are false.

a. Turgor pressure is the water pressure of the cell vacuole pushing against the cell wall.

b. As turgor pressure exerts its impact on to the cell wall, the cell wall exerts a counter-pressure which is called wall pressure which prevents an increase of protoplasm size.

c. Diffusion depends on the number of particles per unit volume, the density of the medium, temperature and pressure. Therefore, gases diffuse more rapidly than liquids.

d. The absorption of water by certain colloids in seeds which results in swelling of the tissues is called imbibition.

e. Osmosis is a type of diffusion of water which occurs through a semi-permeable membrane.