The ___ Echinoderm lineage is made up of sea cucumbers, which are elongated along their oral-aboral axis and have a well-developed circulatory system.

Question

Quizplus · Accepted Answer

Holothuroidea is the class within the phylum Echinodermata that includes sea cucumbers, which are characterized by their elongated bodies along the oral-aboral axis and a well-developed circulatory system.

The ___ Echinoderm Lineage Is Made Up of Sea Cucumbers