An apparatus as shown alongside was set up to investigate a physiolo¬

1.	An apparatus as shown alongside was set up to investigate a physiolo¬gical process in plants. The setup was w kept in sunlight for two hours. Droplets of water were then seen inside the bell jar. Answer the questions that follow :(i) Name the process being studied. (ii) Explain the process named above m Q. 3. (a) (i). (iii) Why was the pot covered with a plastic sheet ? (iv) Suggest a suitable control for this experiment. (v) Mention two ways ip, which this process is beneficial to plants. (vi) List three adaptations in plants to reduce the above mentioned process.
Answer» (i) Transpiration. (ii) The process in which plants lose water in the form of vapour from its aerial parts. (iii) To prevent escape of the soil water as vapour. (iv) A similar set up without a living plant. (v) 1. Due to transpiration there is an upward movement of water so roots can absorb more water and thus minerals from soil. 2. The transpired water forms a cool blanket around the plant thus protecting it from the heat of sun. (vi) 1. The stomata are sunken into pits. 2. The stomata are covered by hair. 3. The leaf is narrow to reduce the number of stomata.

An apparatus as shown alongside was set up to investigate a physiolo¬gical process in plants. The setup was w kept in sunlight for two hours. Droplets of water were then seen inside the bell jar. Answer the questions that follow :(i) Name the process being studied. (ii) Explain the process named above m Q. 3. (a) (i). (iii) Why was the pot covered with a plastic sheet ? (iv) Suggest a suitable control for this experiment. (v) Mention two ways ip, which this process is beneficial to plants. (vi) List three adaptations in plants to reduce the above mentioned process.

Answer»

(i) Transpiration.

(ii) The process in which plants lose water in the form of vapour from its aerial parts.

(iii) To prevent escape of the soil water as vapour.

(iv) A similar set up without a living plant.

(v) 1. Due to transpiration there is an upward movement of water so roots can absorb more water and thus minerals from soil.

2. The transpired water forms a cool blanket around the plant thus protecting it from the heat of sun.

(vi) 1. The stomata are sunken into pits.

2. The stomata are covered by hair.

3. The leaf is narrow to reduce the number of stomata.