Transportation of Water: Root Pressure

Q.

Water will be absorbed by the root hair when:

1. concentration of solutes in the sap is high

2. plant is rapidly respiring

3. they are separated from soil by permeable membrane

4. concentration of salts in the soil is high

Q.

Why do vegetable vendors (subzi-walla) regularly sprinkle water on the vegetables in their baskets? [ 2 MARKS ]

Q.

Guttation in plants takes place through:

1. Lenticels

2. Stomata

3. Hydathodes

4. Epidermis layer

Q.

Differentiate between the force of cohesion and force of adhesion.

Q.

Do carrots have root hairs?

Q. Root pressure is enough to transport water in small trees and bushes.

1. True

2. False

Q. Raj has a small garden. He was watering the plants and he over flooded a pot. He was wondering what happens to the root pressure in that plant. Choose the option that describes what would have likely happened.

1. The root pressure remains unchanged.
2. The root pressure increases.
3. The root pressure decreases.
4. The root pressure decreases and then increases.

Q. When a plasmolysed cell is placed in a hypotonic solution then water will move inside the cell. Which force causes this?

1. DPD
2. OP
3. WP
4. None of these

Q. Define root pressure. (1 mark)

Q. Which of the following is responsible for the transportation of food in plants?

1. Stomata
2. Xylem
3. Phloem
4. Cambium

Q.

Explain the terms: (a) Root pressure

Q.

Which is the unknown part of this figure?

Q. Mark the incorrect statement regarding the image shown below.

1. Part 2 - Soil particles, Part 3 - Xylem
2. Root pressure is responsible for the inward movement of water as shown.
3. The solution outside the cell has a lower solute concentration than the fluids inside the cell.
4. Part 2 - Cortical cells, Part 4 - Xylem

Q.

Water will be absorbed by root hair by

1. Active Transport

2. Osmosis

3. Transpiration

4. Evaporation

Q.

The major driving force for transport of water through xylem during the day is _________ and during the night, it is ________.

1. root pressure, transpiration

2. transpiration, root pressure

3. active transport, transpiration

4. diffusion, osmosis

Q. Osmosis helps plants to absorb water and minerals from the soil.

1. True
2. False

Q.

Root pressure is enough to transport water in small trees and bushes.

1. True

2. False

Q.

:Highest water potential is that of:

1. Pure Water

2. 5 percentage of salt solution

3. Honey

4. 80 percentage of salt solution

Q.

Which is the unknown part of this figure?

1. Stem cell

2. Root hair

3. Sieve tube

4. Petiole