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प्रश्न
उत्तर
(i) Water is one of the raw materials for photosynthesis.
(ii) Water is important for seed germination.
(iii) Water controls the opening and closing of stomata.
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संबंधित प्रश्न
Draw a magnified view of the root-hair, and describe, how it helps in the absorption of water from the soil.
Match the items in column I with those in column II
| Column I | Column II | ||
| (a) | Xylem | (i) | semi - permeable |
| (b) | Phloem | (ii) | permeable |
| (c) | Cell membrane | (iii) | downward flow of sap |
| (d) | Root pressure | (iv) | upward flow of water |
| (e) | Cell wall | (v) | guttation |
Mention whether the following statement is true or false. Correct the false statement by altering the last word only.
The cell wall of the root cell is a differentially permeable membrane.
Give reason for the following:
If you uproot a plant from the soil, its leaves soon wilt.
The diagram given below represents the results of an experiment conducted on two freshly taken leafy shoots of a herbaceous plant. The lower ends of the shoots dip in ordinary water.
(i) What is the aim of the experiment?
(ii) Some parts of the stem in both the shoots have been removed. Name the conducting tissue in shoot (a) and in shoot (b) that has been removed.
(iii) What are the results of this experiment?
Choose the correct answer:
An example of a selective permeable membrane is __________
The below figure shows a root hair:
(i) Label the parts 1 to 4.
(ii) What is the role of part 4?
(iii) Why is the root hair one-celled?
(iv) What will happen to the root hair if some fertilizer is added to the soil near the root hair?
Give Technical Term for the following.
The tissue responsible for the ascent of sap in plants.
Plasma Membrane is ______.
