Question

The upward and downward growth of shoot and roots,
respectively is -
(a) (Phototropism)
(b) (Hydrotropism)
(c) (Chemotropism)
(d)(Geotropism)


Answer please as fast as you can​

Answer 1

Explanation:

Upward growth is -- Phototropism

Downward growth is -- Geotropism

This is because , Geo means = Ground

Photo means = Light

Tropic means = attracted or towards

Answer 2

(d) Geotropism is the upward and downward growth of shoot and roots, respectively.

What is geotropism-

• It is a moment due to growth in the plants. There grow shoots and roots in a plant. Shoots grow upwards in direction, roots grow downwards in the direction.
• This growth is the result of the gravity of the earth. And this process or term is called geotropism.
• When the shoots grow upwards in direction as a result of gravity then it will be negative geotropism.
• Similarly, if the roots grow downwards in direction as a result of the gravity, then it will be called positive geotropism.
• The other process 'Phototropism' is when the plants grow in response to the direction of light, 'Hydrotropism' as the name suggests, is the growth of plants towards the direction of the water.
• Lastly, 'Chemotropism' is the growth of plants in the direction of a certain kind of chemical.

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