Question

Which of the following is not an 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 simple gaseous plant growth regulator synthesized from amino acid methionine. It is also known as ripening hormone because it promotes the senescent changes in the plant and helps in breaking seed and bud dormancy, bring about the horizontal growth of seedlings. But it does not help in overcoming apical dominance.