Provide a long answer to the question given.
 
Name various plant hormones. Also give their physiological effects on plant growth and development.
Answer variants:
cytokinin
Abscisic acid
Gibberellin
Carbohydrates
auxin
Enzymes
a. Cell elongation is caused by
 
b. 
 causes stem growth, increasing stem girth.
 
c. In plants,
stimulates cell division.
 
d
causes leaves and fruits to fall off plants, slowing their growth.