Question

In an airtight experimental set-up that was used by you in the laboratory to study respiration in germinating seeds, the seeds obtained the oxygen for respiration from?

• A. air in the flask
• B. water in the beaker
• C. water in the germinating seeds
• D. water used for soaking the seeds

Answer 1

The correct option is A

air in the flask

The correct option is A.

Explanation of the correct option:

• During the experimental setup for the respiration process, germinating seeds obtain oxygen already present in the flask and get the same via a bent tube.

Explanation of the incorrect options:

Option B:

• Beaker is a laboratory glass wear used to store liquid solutions.

Option C:

• Germinating seeds contain moisture content within them which is used to soften the seed coat during the process of germination.

Option D:

• When seeds are soaked in water, water enters inside them via a small pore called a micropyle.

Therefore, the germinating seeds receive oxygen from the air present in the air-tight flask used for the respiration experiment.