________________ is directional growth responses of plants to a unidirectional source of light.

A.  Gravitropism
B.  Thigmotropism
C.  Dormancy
D.  Phototropism
E.  Thermotropism


D.  Phototropism

Biology & Microbiology

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happens in their absence. The tinman gene in Drosophila results in flies a. without hearts. b. with nonjointed legs. c. with a thick exoskeleton. d. with rust colored eyes. e. without brains

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Parasitoidism is a form of mutualism

Indicate whether the statement is true or false

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Phosphorus is typically in short supply in aquatic and terrestrial ecosystems

Indicate whether the statement is true or false

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