PLANTS RESPOND TO STIMULI

1. Different parts of plants respond to different stimuli.

2. The movement of a plant involves the growth of certain parts of the plant.

3. Plants respond to the following stimuli:

a) gravity

b) water

c) sunlight

d) touch

4.When a part of a plant grows towards a stimulus it is said to show a positive  

   response.

5. However,when a part of the plant grows away from the stimulus it is said to

   show a negative response.

PLANTS RESPOND TO GRAVITY

1. This is the growth of certain parts of a plant in response to gravity.

2. The roots o the plant grow downwards into the soil while the shoots and

     branches grow upwards.

3. The plant grows downwards into the soil to get water in order to make food.