Plant Hormones & Growth Regulation — NEET Biology
📚 Practice Concept📖 NCERT Source
What would be expected to happen if: (a) GA₃ is applied to rice seedlings (b) dividing cells stop differentiating (c) a rotten fruit gets mixed with unripe fruits (d) you forget to add cytokinin to the culture medium.
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In tissue culture, a callus grown under auxin dominance shows root initiation. Later, GA is applied. Which events occur? 1. Dedifferentiated callus cells redifferentiate into root primordia. 2. GA elongates newly formed roots. 3. ABA induces seed dormancy in the callus culture. 4. Cytokinin presence would shift balance towards shoot initiation.
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