Examlex
In plants,the cells at the tips of growing roots and stems contain meristems,which are _______ cells.
Biological Clock
An internal mechanism in organisms that controls the cycle of biological processes and behaviors in a roughly 24-hour cycle.
Phototherapy
A treatment method that uses light to treat certain conditions, such as jaundice in newborns or skin disorders like psoriasis.
Seasonal Affective Disorder (SAD)
A controversial disorder in which a person experiences depression during the winter and an improvement of mood in the spring.
Symptoms
Physical or mental features that are regarded as indicating a condition of disease, particularly such features that are apparent to the patient.
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