1.

Distinguish between:Growth relevant movements and growth irrelevant movements.

Answer»
Growth relevant movementsGrowth irrelevant movements
(i) Growth relevant movements result in growth of the plants.(i) Growth irrelevant movements do not result in growth of the plants.
(ii) They are also called as tropic movements.(ii) They are also called as nastic movements.
(iii) They are in response to stimulus of light, water, gravity, chemicals, etc.(iii) They are generally in response to stimulus of touch.
(iv) Examples : Bending of stem towards light, movement of roots towards gravity and water, etc.(iv) Example : Closing of leaflets of Mimosa plant, closing of Venus fly trap, etc.


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