Echinoderms Are Unusual Invertebrates as They Have All of the Following

question 76

Multiple Choice

Echinoderms are unusual invertebrates as they have all of the following except:

• A) an endoskeleton.
• B) pentaradial symmetry.
• C) a water vascular system.
• D) pedicellariae present in some classes.
• E) small disc-shaped flat bodies.

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Definitions:

Sea Anemones

Marine invertebrates known for their colorful, flower-like appearance and their symbiotic relationships with clownfish and other species.

Taxonomy

Taxonomy is the science of defining and naming groups of biological organisms on the basis of shared characteristics, often organized into a hierarchical classification.

Humans

Homo sapiens, the species of bipedal primates to which all modern human beings belong.

Climate Changes

Long-term alterations in temperature, precipitation, wind patterns, and other aspects of the Earth's climate system.