Which Taxa Have an Open Circulatory System, a Complete Digestive

question 117

Multiple Choice

Which taxa have an open circulatory system, a complete digestive tract, and a reduction of the coelom?

• A) Rotifers
• B) Annelids
• C) Mollusks
• D) Nematodes
• E) Flatworms

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Definitions:

Erectile Disorder

A sexual dysfunction characterized by the consistent inability to maintain an erection sufficient for satisfactory sexual performance.

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A class of diseases that involve the heart or blood vessels, such as coronary artery disease, heart attacks, and stroke.

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Multiple Sclerosis is a chronic autoimmune disease affecting the central nervous system, characterized by inflammation, demyelination, and neurological dysfunction.

Delayed Ejaculation

Marked delay, infrequency, or absence of ejaculation during sexual encounters.