BIO 104 Chapter 32 – FSCC | Academic Year 2025-2026 –
Study Notes and Revision
Radial - correct answer ✔✔ The deuterostomes are characterized by _______________
cleavage.
-Radial Symmetry
-Water Vascular System
-Spiny Skin
-Tube Feet - correct answer ✔✔ List four characteristics of Echinodermata:
-Notochord
-The Dorsal
-Postanal Tail
-Endostyle - correct answer ✔✔ List four major characteristics of Chordata:
Closed - correct answer ✔✔ Chordates typically have a ___________ circulatory system.
Jaws - correct answer ✔✔ Early in vertebrate evolution, anterior pharyngeal arches evolved into
_______.
Crinoidea
-Sea Lilies
-Feather Stars - correct answer ✔✔ Which class of Echinodermata is the oldest class with
mostly extinct species? Give an example.
, Asteroidea
-Sea Stars - correct answer ✔✔ Which class of Echinodermata contains carnivorous predators
such as the starfish which can expel their stomach to digest food? Give an example.
Ophiuroidea
-Basket Stars
-Brittle Stars - correct answer ✔✔ Which class of Echinodermata uses its arms for rowing and
lack suckers on its tube feet? Give an example.
Echinoidea
-Sea Urchins
-Sand Dollars - correct answer ✔✔ Which class of Echinodermata has a solid body plan called a
test? What do these organisms feed on? Give an example.
Holothuroidea
-Sea Cucumbers - correct answer ✔✔ Which class of Echinodermata has modified tube feet? If
they are threatened what do they release? Give an example.
Asexually - correct answer ✔✔ Do Echinoderms produce sexually or asexually?
Feeding and Gas Exchange - correct answer ✔✔ What are the functions of the water vascular
system in phylum Echinodermata?
Endoskeleton - correct answer ✔✔ Do Echinoderms have an exoskeleton or endoskeleton?
True - correct answer ✔✔ All chordates have a vertebrae column at some point in their life
cycle. True or False.
Study Notes and Revision
Radial - correct answer ✔✔ The deuterostomes are characterized by _______________
cleavage.
-Radial Symmetry
-Water Vascular System
-Spiny Skin
-Tube Feet - correct answer ✔✔ List four characteristics of Echinodermata:
-Notochord
-The Dorsal
-Postanal Tail
-Endostyle - correct answer ✔✔ List four major characteristics of Chordata:
Closed - correct answer ✔✔ Chordates typically have a ___________ circulatory system.
Jaws - correct answer ✔✔ Early in vertebrate evolution, anterior pharyngeal arches evolved into
_______.
Crinoidea
-Sea Lilies
-Feather Stars - correct answer ✔✔ Which class of Echinodermata is the oldest class with
mostly extinct species? Give an example.
, Asteroidea
-Sea Stars - correct answer ✔✔ Which class of Echinodermata contains carnivorous predators
such as the starfish which can expel their stomach to digest food? Give an example.
Ophiuroidea
-Basket Stars
-Brittle Stars - correct answer ✔✔ Which class of Echinodermata uses its arms for rowing and
lack suckers on its tube feet? Give an example.
Echinoidea
-Sea Urchins
-Sand Dollars - correct answer ✔✔ Which class of Echinodermata has a solid body plan called a
test? What do these organisms feed on? Give an example.
Holothuroidea
-Sea Cucumbers - correct answer ✔✔ Which class of Echinodermata has modified tube feet? If
they are threatened what do they release? Give an example.
Asexually - correct answer ✔✔ Do Echinoderms produce sexually or asexually?
Feeding and Gas Exchange - correct answer ✔✔ What are the functions of the water vascular
system in phylum Echinodermata?
Endoskeleton - correct answer ✔✔ Do Echinoderms have an exoskeleton or endoskeleton?
True - correct answer ✔✔ All chordates have a vertebrae column at some point in their life
cycle. True or False.
