alleryIn tissue culture, a HIGH auxin to LOW cytokinin ratio in the medium favours
Ashoot formation, not roots
Bundifferentiated callus growth
Cneither growth nor differentiation
Droot formation in the explant
Answer & Solution
Correct answer: D. root formation in the explant
Skoog and Miller showed that the auxin-to-cytokinin ratio in the culture medium decides the developmental path: high auxin : low cytokinin favours root formation.
low auxin : high cytokinin favours shoot formation.
balanced ratio gives undifferentiated callus.
This is the basis of all micropropagation.
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