Analyze how important the special process in the mother's answer is in the life of the plant.
Answers
Explanation:
An apparatus as shown 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 (i).
(iii) Why was the pot 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.
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ANSWER
(i) The process of transpiration is demonstrated in the experiment.
(ii)The process in which plants lose water in the form of vapour from its aerial parts is called transpiration.
(iii)The pot was covered with a plastic sheet to prevent escape of the soil water as vapour.
(iv) The control for this experiment can be set up as same without a living plant.
(v) Due to transpiration there is an upward movement of water so roots can absorb more water and thus minerals from soil. The second benefit is that the transpired water forms a cool blanket around the plant thus protecting it from the heat of sun.
(vi)The stomata are sunken into pit. Stomata are covered by hair. The leaf is narrow to reduce the number of stomata