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Questions
Define the following:
Hygroscopic water
What is meant by Hygroscopic water?
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Solution
Fine soil particles imbibe/absorb water and hold it very tightly. This is called ‘hygroscopic water'.
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______ refers to the microenvironment surrounding the root from which plants absorb water.
______ water refers to the water that is present in the fine spaces of small non-colloidal soil particles.
Bushy appearance after pruning in garden plants is due to ____________.
Water absorption takes place through ______.
Identify the type of water available for absorption by plant roots.
Which type of water is present in the fine spaces of small non-colloidal soil particles?
______ is available to the plants for absorption.
Water which is held very tightly around soil particles by adhesive forces is called ____________water.
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 |
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.
