Growing towards the light is an example of ....

1.   ?    geotropism
2.   ?    positive hydrotropism
3.   ?    negative phototropism
4.   ?    positive phototropism

The most common plant growth substances are called

Which of the following statements is correct

1.   ?    Auxins slow growth below the tip
2.   ?    Auxins promote growth at the tip
3.   ?    are sensitive to light
4.   ?    promote growth below the tip

In the experiment illustrated, predict what would happen to the new shoot A and B

once they have had the agar plates from the original shoot placed on them.

A klinostat is used to show

1.   ?    the affect of motion on a germinating shoot
2.   ?    the affect of gravity on plant growth
3.   ?    the affect of water on root growth
4.   ?    the affect of light on plant growth

What is the name given to the response of shoots to gravity

The cells in the tip of a shoot which release auxins are said to be photosensitive. What does this mean?

If auxins promote gowth, which do they stimulate...

1.   ?    mitosis
2.   ?    meiosis

A young shoot was marked at 1mm intervals and examined one week later. Which section showed the fastest growth?

Explain how weedkillers containing auxins, protect crops from weeds

Auxins are also used in rooting compunds. When might you treat a plant with rooting compund?

Farmers sometimes spray their orchards with auxins, why?