NEET Biology Plant Growth And Development Based Practice Questions & Answers with Viewers Discussion and Detailed Explanation

Plant Growth And Development Topic Based

Question & Answer Discuss:

Root development is promoted by

(a) auxin

(b) abscisic acid

(c) gibberellin

(d) ethylene

Answer: (d)

Ethylene promotes root growth and root hair formation. In low concentration, ethylene is used for initiation of roots and also of lateral roots.

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