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CBSE Class 10 Science Question 36 of 60

Solved 2022 Term 1 Question Paper CBSE Class 10 Science — Question 12

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Question 36

A student was asked to write a stepwise procedure to demonstrate that carbon dioxide is necessary for photosynthesis. He wrote the following steps. The wrongly worded step is:

A student was asked to write a stepwise procedure to demonstrate that carbon dioxide is necessary for photosynthesis. He wrote the following steps. The wrongly worded step is? CBSE 2022 Term 1 Science Class 10 Question Paper Solved.
  1. Both potted plants are kept in dark rooms for at least three days.
  2. Bottom of the bell jars is sealed to make them air tight.
  3. Both potted plants are kept in sunlight after the starch test.
  4. A leaf from both the plants is taken to test the presence of starch.
Answer

Both potted plants are kept in sunlight after the starch test.

Reason — Starch test is done after they have been kept in sunlight to know whether photosynthesis occurred or not.