What Hormone That Occurs in Both Plants and Animals Is

question 68

Multiple Choice

What hormone that occurs in both plants and animals is responsible for operating stomatal closure in plants and regulating blood vessel diameter in mammals?

• A)hydrogen peroxide
• B)nitric oxide
• C)salicylic acid
• D)cytokinin
• E)progesterone

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Definitions:

Holocrine

A type of glandular secretion where the entire cell disintegrates to release its substances, such as in sebaceous glands.

Apocrine

A type of gland that secretes substances by pinching off portions of its cell body, found in areas like the underarm and genital region.

Cytoplasm

The fluid interior of a cell, not including the nucleus, containing organelles and facilitating many metabolic processes.

Extracellular Material

Substances found outside of cells in the body, providing structural and biochemical support to the surrounding cells.