Question
Biology Question on Anatomy of Flowering Plants
The gaseous hormone which induces the ripening of fruits is
A
auxin
B
gibberellin
C
florigen
D
ethylene.
Answer
ethylene.
Explanation
Solution
Ethylene is a volatile gas (CH = CH. It is the only gaseous phytohormone. Ethylene inhibits longitudinal growth of stem and roots and suppresses lateral bud�s growth (apcial dominance), induces fruit growth and ripening, abscission zone formation, flowering in some plants and breaks dormancy of seeds and buds