Arthropods Chapter 28. Arthropods include: Insects, Arachnids, Crustaceans, Centipedes.
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Biology 11Mrs. Knowles
Chapter 28: Arthropods!
Characteristics of all arthropods
1)
2)
3)
4)
5)
6) jointed appendages:
Exoskeletons and molting
Exoskeleton is made of:
Biology 11Mrs. Knowles
Functions of exoskeleton:
Disadvantages of exoskeletons:
1)
2)
molting
Segmentation
Most common options:
Option 1:
Biology 11Mrs. Knowles
Option 2:
Cephalothorax
Gas exchange
Need for efficient gas exchange:
1) Gills
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Other body systems
A. Circulatory system
B. Digestive system
Mandibles
C. Excretion
Malpighian tubules
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D. Muscles
Reproduction
A. Fertilization (in most):
B. Barnacles:
C. Parthenogenesis:
Biology 11Mrs. Knowles
Classes within the phylum Arthropoda
1. Class Arachnida
Examples:
Characteristics:
Chelicerae
Pedipalps
Spinnerets
Biology 11Mrs. Knowles
Examples
Characteristics
4. Class Merostomata
Examples
Characteristics
5. Class Insecta