1.2 (P3) Control In Plants Flashcards
1
Q
What word is used to describe plants growing in response to a stimulus?
A
Topism
2
Q
Name the tropism in response to each stimulus
Light
Gravity
Water
A
Phototropism
Geotropism
Hydrotropism
3
Q
Name a plant hormone
A
Auxins
4
Q
Describe how plants grow in response to light
A
When light hits the plant the stimulus is detected by the receptor and auxins are produced
Auxins move downwards but spread out
The light forces them to move to the shady side
As a result of a high concentration of auxins causes the steam to elongate toward the light
5
Q
Where does the detection of light take place?
A
The tip of the steam
6
Q
What can plant growth hormones be used for?
A
Weed killers in agriculture
