plant process questions
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| List one example of an internal stimulus and one example of external stimulus | internal stimulus: hormones
external stimulus: touch, light, gravity
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| Compare and contrast photoperiodism and phototropism. | photoperdism: is the response to darkness
phototropism: positive response to light.
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| List the five main types of hormones in plants how they help determine how plants grow. | Ethylene: stimulates the ripening process
Auxin: exhibits positive response to light
Gibberellins: stimulates the stem to grow and seeds to germinate.
Cytokinins: promote growth by faster cell division.
Abscisic Acid: stops seeds and buds from growth.
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