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Stigma (botanika)

Stigma (světločivná skvrna/červená skvrna) je drobná skvrna, vnímající přítomnost či nepřítomnost slunečního záření (jakési velice primitivní „oko“). Vyskytuje se u některých řas, např.: u krásnooček. Díky stigmatům se mohou řasové buňky pohybovat ve směru přicházejícího slunečního záření (tzv. fototaxe) – přes den jsou u hladiny, v noci klesnou níž ke dnu.

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Stigma (botanika)

Nodes6
Edges5
Triples0
Avg. degree1.67
Density0.333333
Components1

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Important terminology

slunečního záření řas krásnooček fototaxe stigma světločivná skvrna červená drobná vnímající přítomnost nepřítomnost jakési velice primitivní oko vyskytuje některých např

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