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

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Alkaline pyrogallol is an excellent adsorbing solution.

Alkaline pyrogallol absorbs oxygen.

Alkaline pyrogallol increases the chances of seed germina oxygen.

Alkaline pyrogallol initiates dormancy in seeds.

answer is B.

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Detailed Solution

Concept: Alkaline pyrogallol is utilised in seed germination because it is able to assimilate oxygen, and from this, we conclude that amid germination, oxygen is required by the seed as the metabolic rate is high. Breath requires a sufficient sum of oxygen to fulfil the vitality needs.
The pyrogallol is the oldest photographic developer, its rapid deposition of silver from silver salts having first been noted in 1832. The alkaline solutions of pyrogallol absorb oxygen efficiently and are used in determining the oxygen content of gas mixtures.
Hence, the correct answer is option 2.

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