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Q.
Which of the following is gaseous hormone?
BHUBHU 2010
Solution:
Ethylene is a gaseous plant hormone. It plays a key role in abscission of leaves, flower and fruits. It also hastens the ripening of fruits. Auxin suppresses the growth of lateral buds and plays a major role in the stem elongation, bending of stem towards the light side.
Cytokinins stimulate cell division and delay senescence by mobilising food from other leaf parts.
Gibberellin hormones take part in the stem elongation in leaves and stem, parthenocarpy in