alleryStart learning →The ability of a plant to use light to track time is called what?
APhotoperiodism
BPhotomorphogenesis
CPhototropism
DPhotorespiration
Answer & Solution
Correct answer: A. Photoperiodism
1. Plants use light for far more than photosynthesis, and each use has its own name.
2. Photoperiodism is the ability to use light to track time, so a plant can tell the time of day and the time of year.
3. Photomorphogenesis is growth and development in response to light, which is a different outcome.
4. Phototropism is a directional response that lets a plant grow towards or away from light.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 30 "Plant Form and Physiology", section 30.6 Plant Sensory Systems and Responses_
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