Answers

2015-02-12T20:35:30+05:30
the plant which moves towards the stimulus is known as traphism. there are 4 types of tropism.they are
1.hydrotropism:
plant growth in response to water
2.geotropism-
The movement of a plant part in response to gravity
3.chemotropism:the plant which moves towards the chemical changes during its growth.
4.phototropism:
The movement of a plant part in response to light is called phototropism
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2015-02-12T21:04:06+05:30
A tropism is a growth movement whose direction  is determined  by the direction from which the stimulus strikes the plants.
                                                                                                                                                                                 TYPES OF TROPISM
1)  photo tropism :- the response to light is called photo tropism.
2)  gravi tropism  :-the response to gravi is called gravitropism.
3)  thigmotropism :- the third tropic  response to heat is   thigmotropism
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