Zoology - Echinoderms

Name the class in Echinodermata that are sessile in their early lives, contains no madreporite, spine, or pedicellariae, and have a central disc called a calyx

Class Crinoidea

Name the class in Echinodermata that contains sea lillies and feather stars

Class Crinoidea

Which class in Echinodermata contains powerful predators with regenerative abilities that are capable of pulling 1000 pounds of force?

Class Asteroidea

Which class in Echinodermata contains sea stars?

Class Asteroidea

Which class in Echinodermata contains animals with no arms, rows of tube feet, and dermal ossicles connected into one test?

Class Echinoidea

Which class in Echinodermata contains sea urchins and sand dollars?

Class Echinoidea

What is the name of the powerful, toothed chewing structure in class Echinodermata?

Aristotle’s Lantern

Which class in Echinodermata contains brittle stars?

Class Ophiuroidea

Which class in Echinodermata has slender arms covered by columns of articulated ossicles and has their ambulacral grooves covered?

Class Ophiuroidea

Which class in Echinodermata contains sea cucumbers?

Class Holothuroidea

Which class in Echinodermata contains mainly bilaterally symmetrical organisms, with oral tentacles modified into tube feet that bring food into the mouth, burrow and crawl, and contain a unique respiratory tree?

Class Holothuroidea

What type of symmetry do most Echinoderms posses?

Pentaradial Symmetry

What type of symmetry do larval Echinoderms posses?

Bilateral Symmetry

What makes up the endoskeleton of Echinoderms?

Calcareous dermal ossicles or Spicules

What part of Echinoderms aids in keeping the body surface clean, protecting papulae, aid in feeding, and a pincer-like?

Pedicellariae

Which part of Echinoderms are fine extensions of the coelom that aid in respiration (gills)?

Papulae

Which part of Echinoderms functions as a porous screen that lets water in?

Madreporite

What type of vacular system do Echinoderms have?

Water vascular system?

What are the two stomachs in Echinoderms called?

Cardiac stomach and Pyloric stomach

How is nitrogenous waste removed in Echinoderms?

Coelomocytes

How is gas exchanged in Echinodermes?

Across thin walls of tube feet and papulae

What produces digestive enzymes and are sites of digestion and absorption?

Pyloric ceca

What makes up the nervous system in Echinoderms?

A nerve ring and radial nerve cords