Plant Hormones

Question 1

Name the plant hormone in the tips of shoots and roots

Answer 1

auxin

Question 2

Auxin

Answer 2

Controls the growth of a plant in responce to light (phototropism) and gravity (geotropism)
Moves backwards to stimulate cell elongation

Question 3

Uses of auxin

Answer 3

-Killing weeds by disrupting growth patterns
-Grow cuttings
-Growing cells in tissue culture (clone plants)

Question 4

Uses of Gibberellin

Answer 4

-Controlling dormancy (plants grow at the ‘wrong’ times of the year
-Inducing flowering or larger flowers
-Growing larger fruits

Question 5

Uses of Ethene

Answer 5

Ripens fruit by stimulating enzymes to ripen the fruit (can be picked unripe and can ripen in transport)