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UNIT 5 – Echinodermata and Hemichordata Review NAME____________________________
1. REVIEW VOCAB ORGANIZER!!!!!!
2. Name the 3 phyla that belong to clade Deuterostomia.
HEMICHORDATA, CHORDATA
ECHINODERMATA,
3. Organisms that belong to clade Deuterostomia have a different type of embryological
development than other animals we have studied. These animals are
__________DEUTEROSTOMES_________ which means- BLASTOPORE BECOMES THE ANUS
4. What type of evidence do scientists use to classify organisms and place them in clades on a
cladogram? DNA, EMBRYOLOGY, FOSSIL RECORD, COMPARITIVE ANATOMY, PHYSICAL
CHARACTERISTICS
5. List the 5 main characteristics of echinoderms.
SPINY SKIN, PENTARADIAL SYMMETRY, ENDOSKELETON, NO SEGMENTATION, NO BRAIN,
WATER VASCULAR SYSTEM
6. What type of larvae do echinoderms have? ___BIPINNARIA___-- How is this larval form
different from their bodies as adults? BILATERAL AS LARVAE, PENTARADIAL AS ADULTS
7. What functions do the water vascular system carry out for echinoderms? CIRCULATION,
RESPIRATION, LOCOMOTION
8. What is the opening of the water vascular system called? MADREPORITE
9. Which part of the WVS is responsible for locomotion? TUBE FEET
10. Classes of Echinoderms- Fill in the chart below.
Name of Class
ASTEROIDEA
Characteristics
Members of Class
5 ARMS
2 STOMACHS
SEPARATE SEXES
Star shape
starfish
ECHINOIDEA
HOLOTHUROIDEA
Spiny skin
Aristotle’s lantern
Can swivel spines
Spill their guts
No arms
Tentacles around
mouth
Benthic
Sea cucumbers
Sea urchins
Sand dollars
Label the Starfish Diagrams below-
A __ABORAL SURFACE___ B _oral surface_____ 1. __ANUS_____
2. _MADREPORITE____
3. ___ARM OR RAY___ 4. _CENTRAL DISC______
5. __SPINE__________ 6. __RING CANAL______ 7. _EYESPOT_____
8. AMBULACRAL GROOVE_ 9. __TUBE FEET_______ 10.__MOUTH_______
Phylum Hemichordata1. What does Hemichordata mean? HALF CHORDATE
2. What are the basic characteristics of Hemichordates? 3 BODY REGOINS, COELOMATES, DEUTEROSTOMES,
BENTHIC
3. What type of circulatory system do they have? OPEN
4. What is a proboscis?
LONG FLEXIBLE SNOUT OR TRUNK
5. Where do hemichordates live? BENTHIC, LIVE AND BURROW IN SAND
Label the parts of the acorn worm- proboscis, collar, trunk