What are ‘circadian rhythms’?
[amp_mcq option1=”Daily responses of animals to light conditions” option2=”Growth of plant tip with changing light direction” option3=”Annual responses of living organisms to light conditions” option4=”Daily responses of animals to water availability” correct=”option1″]
This question was previously asked in
UPSC Geoscientist – 2023
Circadian rhythms are daily responses of animals to light conditions.
Circadian rhythms are endogenous biological rhythms that oscillate with a period of approximately 24 hours. They are synchronized by environmental cues, most notably light and dark cycles, and govern various physiological processes and behaviors in living organisms, including sleep-wake cycles, feeding patterns, and hormone release. They represent adaptations to the Earth’s daily cycle of light and darkness.