How many major growth hormones are found in plants?
a) two
b) three
c) four
d) five
Explanation: auxins, gibberellins, cytokinins, abscisic acid and ethylene
Auxin is a Greek word which means……
a) to inhibit
b) to increase
c) to glue
d) to elongate
Where does the auxin produce in plants?
a) in the apical meristem
b) in the tip of coleoptiles
c) vessel elements
d) both a and b
Indole acetic acid with other related compounds are collectively called…….
a) auxin
b) gibberellins
c) cytokinin
d) abscisic acid
All of the following are growth hormone except……
a) auxin
b) gibberellins
c) cytokinin
d) phytochrome
Auxin travels by diffusion towards……
a) shoot
b) leaves
c) flower
d) base of plant
