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प्रश्न
In which forms water is available to roots for absorption?
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उत्तर
Some amount of water is held in pores present between the neighbouring soil particles, due to capillarity. This is called capillary water which is available for absorption.
संबंधित प्रश्न
Fine soil particles imbibe or absorb water and hold it. This is called as _______.
Define the following:
Capillary water
Plants absorb water from the ______.
Cell wall of root hair is formed by ______ components.
Due to which ·of the following reason root cap has no function in water absorption?
Which of the following refers to the water present in the form of hydrated oxides of silicon, aluminium, etc.?
Identify the correct match of type of water given in Column-I and its character in column-II and select the correct option.
| Column-I | Column· II | ||
| (i) | Capillary water | (a) | Present in the form of hydrated oxides of Silicon and Aluminium |
| (ii) | Hygroscopic water | (b) | Goes down through large pores between soil particles and reach water table |
| (iii) | Combined water | (c) | Held in between small non-colloidal soil particles |
| (iv) | Gravitational water | (d) | Held tightly around soil particles by adhesive forces |
Fill in the column 'B' with appropriate answer:
| Column A | Column B | ||
| (I) | Water adsorbed on soil particles | (a) | ______ |
| (ii) | Water penetrated deep in soil | (b) | ______ |
| (iii) | Water present as hydrated oxides | (c) | ______ |
| (iv) | Water present between soil particle | (d) | ______ |
(Capillary water, Combined water, Hygroscopic water, Gravitational water)
Water imbibed or adsorbed on soil particles.
Given below are two statements.
Statement - I: Cell wall is freely permeable.
Statement - II: Płasma membrane is not selectively permeable.
Choose the correct answer from the options given below with reference to structure of root.
