1. Plant hormones play their roles in chemical coordination. Most of the plant hormones promote growth in certain plant parts, e.g. auxin, gibberellins and cytokinin. Abscissic acid is a plant hormone which inhibits growth. Shedding of leaves or ripe fruits is facilitated by abscissic acid.

    Plant hormones play their roles in chemical coordination. Most of the plant hormones promote growth in certain plant parts, e.g. auxin, gibberellins and cytokinin. Abscissic acid is a plant hormone which inhibits growth. Shedding of leaves or ripe fruits is facilitated by abscissic acid.

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  2. Involuntary actions are part of routine activities, while reflex actions are in response to a sudden danger. Moreover, involuntary actions happen in involuntary organs, while reflex action happens in a voluntary organ.

    Involuntary actions are part of routine activities, while reflex actions are in response to a sudden danger. Moreover, involuntary actions happen in involuntary organs, while reflex action happens in a voluntary organ.

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  3. Nervous control is fast, while hormonal control is slow. Nervous control is facilitated by neurotransmitters, while hormonal control is facilitated by hormones.

    Nervous control is fast, while hormonal control is slow. Nervous control is facilitated by neurotransmitters, while hormonal control is facilitated by hormones.

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  4. The movement in a sensitive plant is facilitated by chemical control, while the movement in our legs is facilitated by nervous control.

    The movement in a sensitive plant is facilitated by chemical control, while the movement in our legs is facilitated by nervous control.

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  5. Insulin plays an important role in sugar metabolism. In some patients of diabetes insulin secretion is reduced. Insulin injection is given to such patients to compensate for reduced insulin secretion. Such cases of diabetes are called Insulin Dependent Diabetes Mellitus (IDDM).

    Insulin plays an important role in sugar metabolism. In some patients of diabetes insulin secretion is reduced. Insulin injection is given to such patients to compensate for reduced insulin secretion. Such cases of diabetes are called Insulin Dependent Diabetes Mellitus (IDDM).

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