Unit-2.6-Hormones and control of plant growth Flashcards
1
Q
What are plant sensitive to?
A
Plants are sensitive to light, gravity and moisture.
2
Q
What is phototropism?
A
Plant shoots grow towards light. This response is phototrophism.
3
Q
What is gravitropism?
A
Roots grow towards gravity. This response is gravitrophism.
4
Q
What do the roots also grow towards?
A
Water.
5
Q
What is the hormone that controls phototropism and gravitropism?
A
Auxin
6
Q
What would unequal distribution of auxin result in?
A
Unequal distribution of auxin causes unequal growth. This results in the bending of shoots or roots.
7
Q
What can plan growth hormones be used as?
A
Plant growth hormones can be used as weed killers and to stimulate root growth.
