Question

In an experimental set up to prove oxygen is required for seed germination, alkaline solution of pyrogallol is used. Which of the following is a correct reason for using it in the experiment?

• A. Alkaline pyrogallol is an excellent adsorbing solution
• B. Alkaline pyrogallol absorbs oxygen
• C. Alkaline pyrogallol increases the chances of seed germination
• D. Alkaline pyrogallol initiates dormancy in seeds

Answer 1

The correct option is B Alkaline pyrogallol absorbs oxygen

Alkaline pyrogallol is used in seed germination as it is able to absorb oxygen and from this, we conclude that during germination oxygen is required by seed as the metabolic rate is high and respiration requires ample amount of oxygen to fulfill the energy needs.

So the correct option is 'Alkaline pyrogallol absorbs oxygen'.