Question

The movement of sunflower in accordance with the path of the sun is due to:

• A. Phototropism
• B. Geotropism
• C. Chemotropism
• D. Hydrotropism

Answer 1

The correct option is A

Phototropism

The correct answer is option A.

Explanation of the correct option:

1. The response of plant components to light is known as phototropism.
2. Phototropism is beneficial to plants because it allows them to maximise their photosynthetic capability.
3. It is one of numerous plant tropisms, or motions, that are triggered by external stimuli.

Explanation of the incorrect options

Option B

The response of plant components in the direction of gravitational force is known as geotropism.

Option C

Chemotropism is the reaction of plant parts to a chemical stimulation in the direction of the stimulus.

Option D

The reaction of roots to changes in water concentration is known as hydrotropism.

Final answer:

The movement of sunflower in accordance with the path of the sun is due to phototropism