Plant growth hormones Flashcards
1
Q
Gravitropism (geotropism)
A
the growth of a plant in response to gravity. Roots rare positively gravitropic - they grow downwards.
2
Q
What is auxin?
A
a plant hormone that controls the growth at the tips of shoots and roots.
3
Q
What is gibberellin?
A
a plant hormone which stimulates seed germination, stem growth and flowering.
4
Q
Phototropism?
A
the growth of a plant in response to light. Shoots are positively phototropic - they grow towards light.
