Question

Movement of a plant toward water is an example of:

• A. Phototropism
• B. Geotropism
• C. Hydrotropism
• D. Haptonastic movement

Answer 1

The correct option is C

Hydrotropism

The correct option is C

Explanation of the correct option :

1. Hydrotropism is one kind of tropic movement in which plant parts grow or move in response to the presence of water.
2. Roots are said to be positively hydrotropic (growth towards the water).

Explanation of the incorrect options:

Option A

1. Phototropism is one kind of tropic movement in which plant stems or shoots bend as a response to the stimuli of light.
2. Here, stems show positive phototropism (growth toward the light), and roots show negative phototropism (growth away from light).

Option B

1. It is a type of tropic movement in plants in which plant roots move towards gravity.
2. Here, roots show positive geotropism (growth towards gravity) and shoots show negative geotropism (growth away from gravity).

Option D

1. It is one kind of non-directional or nastic movement in which plants show their movement in response to touch, e.g., Mimosa pudica.

Final answer: The movement of a plant toward water is an example of hydrotropism.