Which Statement About Plant Hormones Is NOT True

question 51

Multiple Choice

Which statement about plant hormones is NOT true?

• A)Plant hormones include at least one form that is a gas.
• B)Each naturally occurring hormone has a specific chemical structure.
• C)Hormones are among the principal internal regulators of plant growth.
• D)Responses to plant hormones may be observed in nearly any part of a plant.
• E)All known growth regulators of plants are chemicals produced naturally in plants.

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Definitions:

Apical Dominance

Effect in which a lengthening shoot tip inhibits the growth of lateral buds.

Auxin

A class of plant hormones involved in various aspects of plant growth and development, including cell elongation.

Hormone

Biological substances synthesized by glands in multicellular organisms, transported by the circulatory system to distant organs to regulate physiology and behavior.

Diploid

Refers to cells that have two sets of chromosomes, one from each parent.