Plant hormonal control differs from animal hormonal control in that
A) there are no separate hormone-producing organs in plants as there are in animals.
B) all production of hormones is local in plants with little long-distance transport.
C) plants do not exhibit feedback mechanisms like animals.
D) only animal hormone concentrations are developmentally regulated.
E) only animal hormones may have either external or internal receptors.

Question

Quizplus · Accepted Answer

Unlike animals, plants do not have specific organs that produce hormones. Instead, hormones are produced in various parts of the plant, including the roots, stems, and leaves.

Answer: B
 While some plant hormones may be transported over long distances, the majority of hormonal control in plants is local, with hormones being produced and acting in the same general vicinity.

Answer: C
 Plants do exhibit feedback mechanisms similar to animals, regulating hormone production and response based on various internal and external factors.

Answer: D
 Hormone concentrations in plants are also developmentally regulated, just as they are in animals.

Answer: E
 Both plants and animals can have hormones with external or internal receptors.

Plant Hormonal Control Differs from Animal Hormonal Control in That