Biology
Fill in the blanks with suitable terms given below: (fast, leaves, conducting, ascent, humid)
(i) Transportation in plants is carried out by a …………… system.
(ii) The upward movement of sap that contains water and minerals is called …………… of the sap.
(iii) Transpiration is more when the wind is blowing ……………
(iv) Most water gets evaporated from the plant from its ……………
(v) Transpiration is reduced if the air is ……………
Transport in Plants
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Answer
(i) Transportation in plants is carried out by a conducting system.
(ii) The upward movement of sap that contains water and minerals is called ascent of the sap.
(iii) Transpiration is more when the wind is blowing fast.
(iv) Most water gets evaporated from the plant from its leaves.
(v) Transpiration is reduced if the air is humid.
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Assertion (A): Nitrogen is the main constituent of all proteins which helps in the growth and development of plants.
Reason (R): Nitrogen is micronutrient, which means it is required in very small amounts by the plants. It is absorbed from the soil as a nutrient element or mineral.
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Reason (R): The outermost layer of root hair cell is the cell wall which is semi permeable in nature, so it helps in the process of osmosis.
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Match the terms given in Column A with those given in Column B
Column A Column B (a) Phloem parenchyma (i) Cylindrical cells devoid of a nucleaus (b) Tracheids (ii) Tubular cells forming long channels (c) Xylem vessels (iii) Cells attached to sieve tubes (d) Sieve tubes (iv) Elongated dead cells (e) Companion cells (v) Cells storing food State whether the following statements are True or False. Rewrite the false statements correctly.
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(b) Water enters the root-hair by osmosis.
(c) Water absorbed by the roots reaches the leaves and is used in producing food for the entire plant.
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(f) Transpiration cools the plant when it is hot outside.