Examlex
By age 6,the average child has a vocabulary of around ___________ words.
Plant Hormones
Chemical substances produced by plants that regulate growth, development, and other physiological processes.
Phytochrome
A photoreceptor in plants that absorbs light primarily in the red and far-red regions, thereby regulating various aspects of growth and development.
Cryptochrome
A class of flavoproteins that are sensitive to blue light and have roles in the circadian rhythms of plants and animals.
Circadian Rhythm
A natural, internal process that regulates the sleep-wake cycle and repeats on each rotation of the Earth roughly every 24 hours.
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