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The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
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Phototropism
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In biology, phototropism, formerly called heliotropism, is the growth of an organism in response to a light stimulus. Phototropism is most often observed in plants, but can also occur in other organis
The Thale Cress (Arabidopsis thaliana) is regulated by blue to UV light
The Thale Cress (Arabidopsis thaliana) is regulated by blue to UV light
Phycomyces, a fungus, also exhibit phototropism
Phycomyces, a fungus, also exhibit phototropism
Example on a Phalaenopsis
Example on a Phalaenopsis
Ravenalas growing between two buildings in Kinshasa, Democratic Republic of Congo. The plane (here perpendicular to the north–south axis) of these two
Ravenalas growing between two buildings in Kinshasa, Democratic Republic of Congo. The plane (here perpendicular to the north–south axis) of these two plants is orientated to maximize daylight absorption
Etiolation
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In botany, etiolation is a characteristic of flowering plants grown in partial or complete absence of light. It is characterized by long, weak stems; smaller leaves due to longer internodes; and a pal
Spanish bluebells Hyacinthoides hispanica, showing both leaves and flowers in both etiolated and non-etiolated states. The longest etiolated leaves ar
Spanish bluebells Hyacinthoides hispanica, showing both leaves and flowers in both etiolated and non-etiolated states. The longest etiolated leaves are about 50 cm long.