Question

The seeds that are used in the experiment to show that CO₂ is given out during respiration, should be

• A. Dry
• B. Soaked in vinegar
• C. Boiled
• D. Moist

Answer 1

The correct option is D

Moist

The correct option is D.

Explanation for the Correct Option:

• The experiment conducted to demonstrate the release of carbon dioxide during respiration involves using germinating seeds that are moist.
• It allows the seed to actively perform respiration during the experiment without their drying.
• The carbon dioxide released from the respiration of the seeds will interact with the solution of potassium hydroxide to produce potassium bicarbonate.

Explanation for Incorrect Options:

Option A:

• The dry seeds lose their water content causing a reduction in the respiration rate.

Option B:

• The seeds soaked in vinegar solution do not germinate and hence do not respire actively.

Option C:

• The boiled seeds can not perform respiration; hence they are not used in the experiment.

Therefore, the seeds used in the experiment to demonstrate the release of carbon dioxide through respiration should be moist.