Which of the Following Statements Is True for Sipunculans but Not

question 29

Multiple Choice

Which of the following statements is true for sipunculans but not for members of the Chaetopteridae? Check all that apply.

• A) These worms are not metameric.
• B)These worms are phylogenetic enigmas whose taxonomic status is being reconsidered.
• C) These worms have been considered in older taxonomies to comprise a phylum separate from Annelida.
• D) These worms are bioluminescent.Bioluminescence may help deter predators.
• E)External fertilization and development results in the development of trochophore larvae.
• F) Feeding involves the use of tentacles surrounding the mouth.

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Definitions:

Serum Potassium

The concentration of potassium in the serum part of blood, important for nerve function, muscle control, and heart function.

Coronary Artery Disease

A condition characterized by the narrowing or blockage of the coronary arteries, leading to decreased blood flow to the heart.

Serum Potassium

The concentration of potassium in the blood serum, which is crucial for muscle and nerve function.

Cardiac Output

The volume of blood the heart pumps per minute.