Uploaded January 2016 | Updated September 2026, 1 week ago

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9.3 Growth of Plants: Auxins and Phototropism

Table of Contents:

00:00 - Auxin and Phototropism
05:45 - Auxin
06:41 - Growth of Plants

Understanding that:
-Plant shoots respond to the environment by tropisms.
-Auxin efflux pumps can set up concentration gradients of auxin in plant tissue.
-Auxin influences cell growth rates by changing the pattern of gene
expression.