Q1 of 86 Page 151

Match the following:


1. Moon flower closes at day time but opens during night time. This non-directional movement in response to stimulus light is called photonasty.


2. Mimosa pudica closes its leaves when slightly touched and this non-directional movement in response to stimulus touch is called thigmonasty.


3. Tulipa sp. responds to temperature and this movement is called thermonasty.


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4

Photosynthesis is important in releasing oxygen to keep the atmosphere in balance.

 5

Plants lose water when the stomata on leaves are closed.

 1

Give the technical terms for the following:

a) Growth dependent movement in plants.


b) Growth independent movement in plants.

 2

Study the pictures below and then complete the table by putting a plus (+) if the shoot or root grows towards the stimulus and a minus (-) if it grows away from it.