Life Processes | Class 10 | Activity 6.2 with Solution

Life Processes | Activities in Text Book with Solution

Activity 6.2

Take two healthy potted plants which are nearly the same size.

Keep them in a dark room for three days.

Now place each plant on separate glass plates. Place a watch-glass containing potassium hydroxide by the side of one of the plants. The potassium hydroxide is used to absorb carbon dioxide.

Cover both plants with separate bell-jars as shown in Fig. 6.4.

Use vaseline to seal the bottom of the jars to the glass plates so that the set-up is air-tight.

Keep the plants in sunlight for about two hours.

Pluck a leaf from each plant and check for the presence of starch as in the above activity.

Do both the leaves show the presence of the same amount of starch?

✅ Answer: No.

What can you conclude from this activity?

✅ Answer:  The amount of CO2 affects the process and outcome of photosynthesis.


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