BIO101 Unit 8
Animal Kingdom Invertebrates I
Phyla Mollusca, Arthropoda, & Echinodermata
Study Guide
I. Phylum Mollusca
A. Representative Organisms:
B. Body Symmetry
C. Body Plan
D. Germ Layers
E. Level of Organization
1. Open circulatory system
F. Reproductive Methods
G. Habitat
H. Unique Characteristics
1. Visceral mass
2. Mantle
3. Foot
I. Three Classes of Mollusca:
1. Class Bivalves
2. Class Gastropods
3. Class Cephalopods
II. Phylum Arthropoda (General Characteristics)
A. Exoskeleton
B. Open Circulatory system
C. Body Segments
D. Arthropod Means
E. Jointed Appendages
F. Nervous system
1. sense organs
2. eyes
G. Reproduction
H. Consumer types
III. Classes of Arthropods
Crustsacea
Arachnida
Chilopoda
Diplopoda
Insecta
A. Crustacea
1. examples
2. habitat
3. hard shells
4. cephalothorax
5. head
6. thorax
7. abdomen with swimmerets
8. respiration
9. excretion
10. consumer types
11. digestive system
12. coelomates
13. open circulatory system
14. nervous system
15. dimorphic
B. Class Arachnida
1. examples
2. habitat
3. body divisions
4. appendages and pincer claws
5. respiration
6. Ticks & mites
7. dimorphic
8. scorpions
9. spiders
10. consumer types
C. Class Chilopoda
1. example
2. appendages per segment
3. “feelers”
4. poison claws
5. nocturnal
6. carnivores
7. habitat
8. reproductive facts
9. life span
D. Class Diplopoda
1. examples
2. “thousand legger”
3. body type and appendages
4. consumer type
5. habitat
6. reproductive facts
7. nocturnal
8. no poison claws
E. Class Insecta
1. examples
2. habitat
3. Body Divisions & Appendages
a. head
b. thorax
c. abdomen
1. tympanum
2. ovipositor
3. spiracles
4. stingers
4. exoskeleton
5. respiratory system
6. circulatory system
7. feeding mechanism
8. body plan
9. sense organs
10. excretory system
11. reproductive facts
12. consumer types
13. Unique characteristics
a. metamorphosis
b. social systems or caste system
IV. Phylum Echinodermata “Spiny Skinned Animals”
A. examples
General Characteristics:
B. endoskeleton
C. body plan
D. nervous system
E. respiratory system
F. Reproduction
G. habitat
H. Coelomates
I. radial symmetry
J. consumer types
K. Unique Characteristics
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