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Q.5.    Design an experiment to demonstrate hydrotropism.

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The movement of the plant in the direction of the stimulus is called tropism.

AIM: To demonstrate hydrotropism in plants.

PROCEDURE :

i. Plant a seedling in a vessel containing soil.

ii. Adjacent to the seedling put a porous pot containing water.

iii. Leave the set up for a few days.

OBSERVATION :

iv. On examining the roots of seedlings it is observed that the roots bend towards the source of water and do not grow straight.

RESULT :

It confirms that plant shows hydrotropism as the roots bend towards the porous pot of water. Hydrotropism is a plant growth response in which the direction of growth is determined by a stimulus of the gradient in water concentration.

Posted by

Pankaj Sanodiya

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1 Take a porous pot and fill it with water.

2 keep a few freshly germinated pea seedling in a dried sand.

3 As the water is not available in sand the root growing will bend towards porous pot filled with water.

4 you will observe a hydrotropic curvature of the root as it grows towards water 

5 This bending of root show the movement as a response towards water.

Posted by

Manpreet Singh

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