Question

Which one of the following is a characteristic not related with the suitability of the roots for absorbing water
a) tremendous surface area
b) contain cell SAP at a higher concentration than the surrounding soil water
c) root hairs have thin cell walls
d) grow downward into the soil

Answer 1

it may be the Option - B dear

Answer 2

The roots growing downward into the soil is not directly related to absorbing water. (option d)

• The roots of a plant grow from the radicle of a germinating seed. It helps in anchorage of the plant to the soil. But it's most important function is the absorption of water and minerals from the soil.
• Option (d) is not directly related to absorbance of water because water can be accessible even about the soil. For example, pneumatophores in some plants protrude upward instead of into the soil.
• The primary role of roots growing deep into the soil is strong anchorage of the plant to the earth.
• The other characteristic like large surface area of root hair and their thin cell walls help in absorption of water. Higher concentration of sap in roots favours endosmosis of surrounding soil water.