Plant Growth And Development Ques 73
73. What is a stress hormone? or The hormone produced during adverse environmental conditions is
[1993]
(a) benzyl aminopurine
(b) dichlorophenoxy acetic acid
(c) ethylene
(d) abscisic acid
Show Answer
Answer : d
Hints & Solutions
(d) Abscisic Acid (ABA) is called stress hormone which works in adverse environmental condition when there is low water content in the atmosphere or in drought conditions. ABA causes the stomatal closure of leaves due to which the water loss by the plant is minimized.
BETA
