THE CELL
CELL COMMUNICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Plant hormones may travel in air or through vascular systems.
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Animal hormones are primarily for mating and embryonic development.
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Animal hormones are found in much greater concentration.
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Plant hormones interact primarily with intracellular receptors.
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Detailed explanation-1: -The significant difference is in their complexity, while plant hormones are simple organic substances, animal hormones are complex organic substances. Animal hormones can diffuse through the blood, while plant hormones diffuse through the phloem and xylem.
Detailed explanation-2: -Generally, some examples of animal hormones are insulin, thyroxine, serotonin, estrogen, progesterone, testosterone, etc. while some examples of plant hormones are auxin, cytokinin, gibberellin, abscisic acid, etc.
Detailed explanation-3: -In plants, hormones travel large throughout the body such as through the vascular tissue (xylem and phloem) or cell-to-cell via plasmodesmata. Potentially every cell in a plant can produce plant hormones. In contrast, many animal hormones are produced only in specific glands.
Detailed explanation-4: -Hormones are produced naturally by plants, while plant growth regulators are applied to plants by humans. Plant hormones and growth regulators are chemicals that affect: Flowering. Aging.
Detailed explanation-5: -Unlike plant hormones, animal hormones are often (though not always) produced in specialized hormone-synthesizing glands (shown below). The hormones are then secreted from the glands into the blood stream, where they are transported throughout the body.