Advertisements
Advertisements
प्रश्न
Why is the structure of the root hair is quite suitable for absorbing water from the soil ?
उत्तर
The root hair are suitable for absorbing water from the soil in the following three ways:
- The root hairs present a large surface area. More the surface area, greater is absorption.
- The cell wall is of cellulose nature and forms permeable membrane and the plasma membrane around the vacuole forms the semi-permeable membrane.
- Root hairs have solution (cell sap) of a higher concentration than the surrounding soil water.
Fig. Unicellular root hairs through the soil particles
APPEARS IN
संबंधित प्रश्न
An experiment was set up as shown in the figure below. After some time, the Water level in test tube A fell down but not in test tube B.
Why was there a fall in the water level of test tube A and not in that of test-tube B?
How are roots useful to the plants? Give any two points.
State whether the following statement is true or false. Rewrite the false statement correctly.
Water absorbed by the roots reaches the leaves and is used in producing food for the entire plant.
Give two major functions of roots.
Name the following:
The process by which intact plants lose water in the form of droplets from leaf margins.
Name the following:
The tissue concerned with upward conduction of water in plants.
Name the following:
The pressure which is responsible for the movement of water molecules across the cortical cells of the root.
Mention whether the following statement is true (T) or false (F) and give an explanation in support of your answer.
Guttation is another name for bleeding in plants.
Root pressure can be measured by using ______.