Ascent of Sap

Q.

There is a high demand for water in plants. Identify the option(s) that support(s) this statement.
1. A watermelon contains over 92% water.
2. A corn plant absorbs almost 3 litres of water in a day.
3. A mustard plant absorbs water equal to its own weight in 5 hours.

1. 1 & 2

2. 2 & 3

3. 1, 2, & 3

4. 1 alone

Q.

Why is the movement of water important?

Q. Water from the root hair moves to the cortical cells by ___________ process.

1. Diffusion
2. Translocation
3. Osmosis
4. Active Transport

Q. The mutual attraction between water molecules is called while is the attraction of water molecules to the surface.

1. osmosis
2. cohesion
3. capillarity
4. adhesion
5. transpiration

Q.

Molecules of water are held together by hydrogen bonds.This mutual intermolecular attractive force is called _______.

1. adhesive force

2. imbibition

3. cohesive force

4. capillarity

Q. Refer the given figure which shows a section of plant roots having a root hair. Which of the following statements is correct for absorption of water to occur?

1. The water potential of the soil water is zero.
2. The water potential of cell Y is higher than cell X.
3. The water potential of cell Y is lower than cell Z.
4. The water potential of cell Z is the lowest.