1
Q
What are the different tropisms?
A
phototropism - shoots grow towards light
gravitropism - roots grow in the direction of gravity, shoots grow in the opposite direction
hydrotropism - roots grow in direction of mosture
2
Q
What controls growth in plants?
A
Auxins:
- plants bend towards light due to an uneven distribution of auxins.
- plant growth hormones are used in agriculture as rooting hormones and weed killers
