The viability of seeds is tested by

The Viability Of Seeds Is Tested By Biology QuestionThe Viability Of Seeds Is Tested By Biology Question

The viability of seeds is tested by

Options

(a) Safranine
(b) 2, 6 dichlorophenol indophenols
(c) 2, 3, 5 triphenyl tetrazolium chloride
(d) DMSO

Correct Answer:

2, 3, 5 triphenyl tetrazolium chloride

Explanation:

Dehydrogenase enzyms present in living tissue reduce the tetrazolium chloride to formazan, a reddish, water insoluble compound. This reaction occurs in or near living cells which are releasing hydrogen in respiration processes. Viable tissues produce a normal red-colour, weak living tissue produce an abnormal colour. Dead tissues do not stain, remaining usually white.

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