WITH THE HELP OF SUITABLE EXAMPLES EXPLAIN THE TERMS OF PHOTOTROPISM,GEOTROPISM AND CHEMOTROPISM.

Dear Student,

Phototropism is the growth movement in plants in response to light stimulus. For example, the flower head of a sunflower is phototropic as it moves from East to West, along with the movement of the Sun.

Geotropism is the 
growth movement in plants in response to the force of gravity. For example, the roots of the plant always grow downwards while the shoots always grow upwards, away from the earth.

 Chemotropism is the
growth movement in plants in response to chemical stimuli. For example, the growth of pollen tube towards the ovule in the ovary, through the stigma and style.

Hope this information will clear your doubts about the topic.
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