Why is a plant's response to a stimulus so much slower than an animal's response to one?

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Question

Why is a plant's response to a stimulus so much slower than an animal's response to one?

Accepted Answer

It depends on cells growing and elongating over hours, not on impulses taking a fraction of a second. — Award 1 mark. Plant responses such as phototropism happen as auxin changes how fast cells elongate, which takes hours or days; animal nerve impulses travel in milliseconds. Plant hormones are made in shoot and root tips, and plant cells do have receptors.

Answer

Plant hormones are made only in the roots and must travel up the whole plant first

Answer

Plants respond only during daylight, because their hormones need light to work

Answer

It depends on cells growing and elongating over hours, not on impulses taking a fraction of a second.

Answer

Plant cells have no receptors, so the hormones must build up to high levels first

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