The Class __________ Includes Lumbricus Terrestris, the Common Earthworm

question 57

Multiple Choice

The class __________ includes Lumbricus terrestris, the common earthworm.

• A)Oligochaeta
• B)Polychaeta
• C)Polyplacophora
• D)Hirudinea
• E)Malacostraca

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Definitions:

Chemical Secretions

Chemical secretions refer to substances produced and released by cells or glands, which can serve various functions such as signaling, protection, or digestion.

Receptor Sites

Specific regions on the surface of a cell or within a cell where molecules such as hormones, drugs, or neurotransmitters, can bind to elicit a physiological response.

Endocrine Glands

Glands of the endocrine system that release hormones directly into the bloodstream to regulate various body functions.

Hormones

Chemical messengers that are secreted by glands in the endocrine system and travel through the bloodstream to target organs.