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Phototropism | Plant Biology | Khan Academy Phototropism and the role that auxin plays.

Watch the next lesson: https://www.khanacademy.org/science/biology/plant ...

Tropism in plants : phototropism, geotropism etc. This plant biology lecture explains about phototropism, gravitropism and geotropism of plants. For more information, log on to- ...

Learn to understand Hypothesis Testing