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प्रश्न
Grapes shrink when immersed in a very strong sugar solution.” Explain.
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उत्तर
Very strong sugar solution is hypertonic to the grapes juice. Therefore, water from inside the grapes moves to outside hypertonic solution. It results shrinkage of the grapes.
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संबंधित 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 |
Mention whether the following statement is true (T) or false (F) and give an explanation in support of your answer.
If the phloem of a twig is removed keeping the xylem intact, the leaves of a twig wilt.
Root hairs become flaccid, when fertilizers are added to the moist soil around it. Explain.
________ type of tissues are present in epiphytic roots.
Draw a neat and labelled diagram of Root hair.
Aquatic animals like fish excrete their wastes in gaseous form as ______.
Explain about the factors that affect water absorption.
Name the following:
Unicellular outgrowths from the epidermis of roots.
