ICSE Class 8 Answered
Q1. Describe the usefulness of transpiration for plants. long answer.
Asked by Chandrashekhar | 03 Sep, 2018, 07:25: PM
Expert Answer
1. During transpiration, water gets evaporated from the plants. The heat required for this evaporation is obtained from the plant itself (latent heat). Therefore, the plant is able to cool itself when it is hot outside.
2. Transpiration ensures the maintenance of the concentration of cell sap. If there is no transpiration, then the absorption of water by roots will make the cell sap more dilute.
3. The greater amount of transpiration helps in the development of mechanical tissues in plants. The plants become healthier and more compact.
4. It helps in the absorption of carbon dioxide from the atmosphere during photosynthesis as the openings of stomata in daytime facilitate gaseous exchange.
Answered by Sivanand Patnaik | 04 Sep, 2018, 09:15: AM
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