What are the five major extant classes of the phylum Echinodermata?

April 17, 2026Biology

ScanSolve AI Answer

April 17, 2026

Answer

Hey sam~uel, good to see you again.

The phylum Echinodermata is divided into five major extant classes. These classes are: • Asteroidea (sea stars) • Ophiuroidea (brittle stars and basket stars) • Echinoidea (sea urchins and sand dollars) • Holothuroidea (sea cucumbers) • Crinoidea (sea lilies and feather stars)

Therefore, the correct option is A.

The final answer is $\boxed{A}$

Send me the next one 📸

Was this helpful?

Need help with your own homework?

Get instant step-by-step solutions to any question. Free to start.

Ask Your Question

More Biology Questions

QA student was viewing a prepared slide of a plant cell under high power microscope. The features of…QA control experiment for the above QName the chemical compound labeled X and state its function. Why is it necessary to place the flask…QState 8 disease vector preventive measures QList the organs food passes through from ingestion to elimination. (5 marks) Explain the difference…

See all Biology questions →

Still have questions?

Quick Answer

Hey sam~uel, good to see you again. The phylum Echinodermata is divided into five major extant classes.

Asked on April 17, 2026Biology

This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.

ScanSolve AI AnswerAnswered on April 17, 2026

Hey sam~uel, good to see you again. The phylum Echinodermata is divided into five major extant classes. These classes are: • Asteroidea (sea stars) • Ophiuroidea (brittle stars and basket stars) • Echinoidea (sea urchins and sand dollars) • Holothuroidea (sea cucumbers) • Crinoidea (sea lilies and feather stars) Therefore, the correct option is A. The final answer is A Send me the next one 📸