Absorption of Water

Q.

The correct sequence of radial movement of water in root is:

1. Soil water $\to$ Root hair $\to$ Cortex $\to$ Endodermis $\to$ Pericycle $\to$ Xylem

2. Epidermis $\to$ Cortex $\to$ Pericycle $\to$ Endodermis $\to$ Xylem

3. Soil water $\to$ Root hair $\to$ Epidermis $\to$ Pericycle $\to$ Endodermis $\to$ Xylem

4. Root hair $\to$ Cortex $\to$ Pericycle $\to$ Phloem $\to$ Xylem

Q.

In roots, vascular bundles are

1. at left

2. at right

3. in center

4. at the top

Q. Root hairs help in reducing the surface area for absorption.

1. False
2. True

Q. The upward movement of water in a plant towards the stem and leaves is called ascent of sap.

1. False
2. True

Q. Symplast and apoplast pathway helps us to understand

1. both b and c
2. ascent of sap
3. movement of sugars through phloem
4. absorption of water by roots into xylem

Q. During absorption of water by roots, the water potential of cell sap is lower than that of:

1. Soil solution but higher than that of pure water
2. Pure water but higher than that of soil solution
3. Neither pure water nor soil solution
4. Pure water and soil solution

Q.

What does Apoplastic growth mean? Apoplastic growth is through formation of. a)Cell wall and cell junction

b)Matrix and fibres of connective tissue c)intake of water

Q.

How is the mycorrhizal association helpful in absorption of water and minerals in plants?

Q.

The correct sequence of radial movement of water in root is:

1. Epidermis $\to$ Cortex $\to$ Pericycle $\to$ Endodermis $\to$ Xylem

2. Soil water $\to$ Root hair $\to$ Epidermis $\to$ Pericycle $\to$ Endodermis $\to$ Xylem

3. Soil water $\to$ Root hair $\to$ Cortex $\to$ Endodermis $\to$ Pericycle $\to$ Xylem

4. Root hair $\to$ Cortex $\to$ Pericycle $\to$ Phloem $\to$ Xylem

Q.

In roots, vascular bundles are

1. at left

2. at right

3. in center

4. at the top