Sea Stars Are in the Phylum Echinoderms

question 129

Multiple Choice

Sea stars are in the phylum Echinoderms. From the list provided, select the characteristics that are observed in this phylum.

• A) They prey on molluscs.
• B) Most have radial symmetry.
• C) They are pseudoceolomates.
• D) They have an incomplete nervous system.

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Definitions:

Efficiently

Conducting an activity in such a manner that it achieves the maximum output with the minimum input or resources, without waste.

Rival

An entity competing against another for the same objective or for superiority in the same field of activity.

Excludable

A feature of a product or service enabling its owner to exclude others from usage unless payment is received.

Property Rights

The legal rights to possess, use, and dispose of assets, including property and intellectual property.