plant hormones Flashcards
1
Q
if plants get light for all directions what why do they grow
A
straight up
2
Q
if plants get light from one direction what way do they grow
A
they will bend towards the light so they can get as much light for photosynthesis
3
Q
what is the plants light response called
A
phototropism
4
Q
what is phototropism controlled by
A
by a hormone called auxin it makes cells elongate (get longer)
5
Q
how does phototropism work
A
the tip of the shoot makes auxin
the auxin moves to the shaded side of the shot
the cells on the shaded side elongate
the shoot bends towards the light
6
Q
where is auxin produced
A
the tip of the shoot
7
Q
if you are asked to draw the shoot bending towards the light then draw it longer than the previous diagram it will have grown taller
A
