Understanding Plant Tropisms and Hormones

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Tropism

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The growth or movement of a plant in response to an environmental stimulus.

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Example of phototropism:

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A sunflower bending towards the sunlight.

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What type of tropism is demonstrated when plant roots grow downward?

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Gravitropism

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Which type of tropism involves a plant's response to touch?

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Thigmotropism

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Hydrotropism

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The growth of a plant towards a water source.

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Auxin

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A type of plant hormone that promotes cell elongation.

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Where is auxin primarily located in a plant?

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In the tips of shoots and roots.

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Gibberellins

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A type of plant hormone that promotes growth and development.

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Where are gibberellins primarily found in plants?

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In the seeds, young leaves, and roots.

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Which of the following is NOT a type of tropism? Phototropism, Gravitropism, Thigmotropism, Chemotropism

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Chemotropism