Introduction to Echinoderms

The video tutorial explores the characteristics and features of echinoderms, a phylum that includes starfish, sea urchins, sea cucumbers, and sand dollars. It explains the origin of the term 'echinodermata' from Greek, meaning 'spiny skin.' The tutorial highlights the differences between echinoderms and arthropods, focusing on their internal skeleton and radial symmetry. It also describes the water vascular system, which aids in locomotion and feeding. Finally, it mentions the diversity of echinoderms, with around 6,000 species primarily inhabiting ocean environments.

What is the appearance of the skin on a starfish?

What does the term 'echinodermata' mean?

How do echinoderms differ from arthropods?

What is the function of the water vascular system in echinoderms?

How many living species of echinoderms are there, and where do most of them live?