Question

Observe the picture of an activity given as Fig. 7.4 carried out with leaves of plants and polythene bag.

Now answer the following:
(a) Which process is demonstrated in the activity?
(b) When will this activity show better results – on a bright sunny day or a cloudy day?
(c) What will you observe in the polythene bag after a few hours of setting up the activity?
(d) Mention any one precaution you must take while performing this activity.

Answer 1

(a) Transpiration.
(b) On a bright sunny day.
(c) Small drops of water inside the polythene cover.
(d) The set-up must be airtight/polythene bag must be dry/ the twig must be fresh with 10-12 leaves.