Question

Light is

• A. Stimulus
• B. object
• C. reflex
• D. action

Answer 1

The correct option is A

Stimulus

The correct option is A.

Explanation of correct option:

Stimulus

1. When a plant bends or develops more in a certain direction in reaction to light, this is referred to as phototropism.
2. The shoot often develops toward the light, whereas the roots typically migrate away from it.
3. The face of the sunflower follows the movement of the sun.
4. Any detectable change in the environment that can elicit a response in the organism is a stimulus.
5. All living things respond to stimuli.
6. Light is one of the stimuli. Other examples include water, gravity, etc.

Explanation of incorrect options:

Option B: Light is not an object.

Option C: Light is a stimulus. A reflex action occurs in response to a light stimulus. For example, the pupil constricts in response to bright light.

Option D: The living organism takes action in response to the light stimuli.

Light is a stimulus.