Question

Explain the three directional movements in plants with examples.

Answer 1

Explanation:

Tropic movements are the movements which occur in the direction of the stimulus. Positive phototropism is seen in shoots which respond by bending towards light. Negative geotropism is seen in shoots by growing away from the ground. ... Chemotropism is a growth movement of a plant part in response to chemical stimulus

Answer 2

Three types of directional movements in plants:

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

2. Geotropism: The growth movement in plants in response to the force of gravity is known as geotropism. In geotropism, the roots of the plant always grow downwards while the shoots always grow upwards, away from the earth.

3. Chemotropism: It is the phenomenon where the movement of an organism is caused in response to a chemical stimulus.

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