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प्रश्न
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 |
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उत्तर
| Column I | Column II | ||
| (a) | Xylem | (iv) | upward flow of water |
| (b) | Phloem | (iii) | downward flow of sap |
| (c) | Cell membrane | (i) | semi - permeable |
| (d) | Root pressure | (v) | guttation |
| (e) | Cell wall | (ii) | permeable |
संबंधित प्रश्न
The process by which root hairs absorb water from the soil.
Three plants (a), (b) and (c) were placed in beakers containing coloured water. The water in each beaker was covered with a layer of oil. The leaves were removed from plant (b), while plant (c) was exposed to strong light.
(i) In which plant, (a), (b) or (c) would the water move up the fastest?
(ii) In which plant (a), (b) or (c), would the water move up slowly?
(iii) Why was the water covered with a layer of oil?
(iv) What is being investigated by this experiment?
Root hairs become flaccid, when fertilizers are added to the moist soil around it. Explain.
A few RBC’s were kept in three test tubes containing isotonic, hypotonic and hypertonic solutions. What will be the expected observations after a few hours? Explain.
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?
Describe structure of root hair.
Which part of the root helps in the maximum absorption of water and minerals?
Identify the zone in wbkh root hair occurs.
