Plant Hormones

Question 1

What is Auxin

Answer 1

-a plant hormone that controls growth near tips of shoots and roots
-controls growth of plant in response to light and gravity

Question 2

Where is auxin produced

Answer 2

I’m the tips and moves backwards to stimulate cell elongation which occurs in cells behind tips

Question 3

What happens if tip of shoot removed

Answer 3

No auxin available and shoot May stop growing

Question 4

What does extra auxin do

Answer 4

Promotes growth in shoot but inhibits growth in root

Question 5

What happens when shoot grows towards light

Answer 5

Shoot is exposed to light so more auxin accumulates on side that’s in shade than the side in light
Makes cells grow faster on shaded side so root grows towards light

Question 6

What happens when shoots grow away from gravity and roots grow towards gravity

Answer 6

When shoot growing sideways - gravity produces unequal distribution of auxin so more auxin on lower side
Causes lower side to grow after bending shoot upwards
Root growing sideways will have auxin on lower side
I’m root extra auxin inhibits growth - cells on top grow faster and root bends downwards