What are plant hormones? A. chemicals produced in low concentrations that transmit signals between cells B. chemicals produced in high concentrations that transmit signals between cells C. a group of chemicals synthesized by glands that cause physiological changes D. distasteful chemicals produced in leaves and shoots to deter herbivores
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Step 1: Plant hormones, also known as phytohormones, are signal molecules produced in extremely low concentrations inside a plant. Show more…
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Plant hormones are unlike animal hormones because A. they are produced only in small amounts; B. they have different effects on different organs; C. they are not produced in specialized glands; D. they are mobile and can move throughout the plant body; E. interactions among different plant hormones can determine their ultimate effect on an organ.
A plant cell's response to a hormone depends on _____. a. which hormone receptors it has b. the way its hormone receptors work inside the cell c. the presence or absence of other hormones d. all of the above
Which is the defining feature of hormones? a. They are only produced in endocrine glands. b. They are secreted into the blood, where they may reach one or more types of distant target cells, thereby altering cell function throughout the body. c. They are released only by neurons. d. They are never released by neurons. e. They are secreted into ducts, where they diffuse to another nearby gland or other structure.
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