Question

Which is not the effect of ethylene?

• A. Promotes senescence and abscission of plant organs
• B. Breaks seed and bud dormancy
• C. Brings about horizontal growth of seedlings
• D. Hastens fruit ripening
• E. Helps to overcome apical dominance

Answer 1

The correct option is E Helps to overcome apical dominance

Ethylene is a plant hormone. It is also called as ripening hormone as it hastens fruit ripening in plants. In certain plants, it breaks seed and bud dormancy and induces germination. It also causes flowers to fall from the plant and hence, promotes senescence and abscission of plant hormones. It also causes the triple response in etiolated seedlings. It inhibits stem elongation and brings about the horizontal growth of seedlings.

Thus, the correct answer is option E.