An apparatus as shown below, was set up to investigate a physiological

1.	An apparatus as shown below, was set up to investigate a physiological process in plants. The setup was 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 in Q. 3. (a) (i). (iii) Why was the pat covered with a plastic sheet ? (iv) Suggest a suitable control for this experiment. (v) Mention two ways in which this process is beneficial to plants.(vi) List three adaptations in plants to reduce the above mentioned process.
Answer» (i) Transpiration. (ii) Transpiration is the evaporative loss of water from the aerial parts (leaves and stems) of the Plant. (iii) To prevent evaporation of water from the soil. (iv) Seal the edges of the bell jar with vaseline to prevent the entry of air inside the apparatus. (v) Benefits of transpiration : (1) Excess water is removed by plants. (2) Because of the release of water from plant, transpiration contributes towards lowering the temperature. (vi) Adaptations in plants to reduce transpiration : (1) The stomata may be sunken or covered by hairs. (2) The leaves may become narrower. (3) The leaves may be covered with thick cuticle

An apparatus as shown below, was set up to investigate a physiological process in plants. The setup was 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 in Q. 3. (a) (i). (iii) Why was the pat covered with a plastic sheet ? (iv) Suggest a suitable control for this experiment. (v) Mention two ways in which this process is beneficial to plants.(vi) List three adaptations in plants to reduce the above mentioned process.

Answer»

(i) Transpiration.

(ii) Transpiration is the evaporative loss of water from the aerial parts (leaves and stems) of the Plant.

(iii) To prevent evaporation of water from the soil.

(iv) Seal the edges of the bell jar with vaseline to prevent the entry of air inside the apparatus.

(v) Benefits of transpiration :

(1) Excess water is removed by plants.

(2) Because of the release of water from plant, transpiration contributes towards lowering the temperature.

(vi) Adaptations in plants to reduce transpiration :

(1) The stomata may be sunken or covered by hairs.

(2) The leaves may become narrower.

(3) The leaves may be covered with thick cuticle