Question

write three types of thatoccure in co-ordination in plants

Answer 1

yes, there are many kinds of movements in  plants . they are of two types : tropism and nastismtropism movement are of four types :

phototropism , hydrotropism , geotropism and thigmotropism.

 1. phototropism : the movement of plant parts towards the presense of light is called phototropism . shoot system of plants show positive phototropism and the root system of plants show negative phototropism .

2. hydrotropism : the movement of plant parts towards the presence of water is called hydrotropism .

3.geotropism : the growth of plant parts towards the earth 's gravitational force is called geotropism  . the shoot system of plants show negative geotropism and root system of plant show positive geotrpism .

4.thigmotropism : the growth of plat parts in respons to external stimuli is calld thigmotropism . both the shoot system and the root system can show positive and negative thigmotropism. 

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Answer 2

There are five stimuli in the environment. They are light, gravity, chemical, water and touch. These stimuli give five types of tropism. They are phototropism, geotropism, chemotropism, hydrotropism and thigmotropism.