Arthropods

A. Arthropod Characteristics B. CrustaceansC. Arachnids D. Centipedes/MillipedesE. Insects

http://www.youtube.com/watch?v=go4MqVq9HVM

Arthropods

A. Arthropod Characteristics B. CrustaceansC. Arachnids D. Centipedes/MillipedesE. Insects

• Invertebrates• Bilateral Symmetry• Open Circulatory

System• 2 Opening Digestive

System• Sexual Reproduction

Arthropods

A. Arthropod Characteristics 1. External Skeleton 2. Segmented Body 3. Jointed AppendagesB. CrustaceansC. Arachnids D. Centipedes/MillipedesE. Insects

Arthropods

A. Arthropod Characteristics 1. External Skeleton 2. Segmented Body 3. Jointed AppendagesB. CrustaceansC. Arachnids D. Centipedes/MillipedesE. Insects

• Hard, waxy outer covering

• Made of protein and Chitin

• Protects body• Gives support• Prevents evaporation

Arthropods

A. Arthropod Characteristics 1. External Skeleton 2. Segmented Body 3. Jointed AppendagesB. CrustaceansC. Arachnids D. Centipedes/MillipedesE. Insects

• Molting – Process of shedding exoskeleton when it is out grown.

Arthropods

A. Arthropod Characteristics 1. External Skeleton 2. Segmented Body 3. Jointed AppendagesB. CrustaceansC. Arachnids D. Centipedes/MillipedesE. Insects

• Body divided into sections that move independently and serve different functions

• Allows for efficient movement

Arthropods

A. Arthropod Characteristics 1. External Skeleton 2. Segmented Body 3. Jointed AppendagesB. CrustaceansC. Arachnids D. Centipedes/MillipedesE. Insects

• Part of anatomy that projects from the body

ex. Legs, antenna…• Allows for greater

flexibility• Specialized for specific

functions ex. Movement, sense

Arthropods

A. Arthropod Characteristics B. Crustaceans 1. Physical Characteristics 2. Obtain Food/OxygenC. Arachnids D. Centipedes/MillipedesE. Insects

• 2-3 Body sections• 5 or more pairs of

appendages• At least 1 pair of

appendages per segment

Arthropods

A. Arthropod Characteristics B. Crustaceans 1. Physical Characteristics 2. Obtain Food/OxygenC. Arachnids D. Centipedes/MillipedesE. Insects

Front appendages called chelipeds grab food

Scavangers Herbivores Carnivores

Arthropods

A. Arthropod Characteristics B. CrustaceansC. Arachnids 1. Physical Characteristics 2. Obtain Food/Oxygen D. Centipedes/MillipedesE. Insects

22 Body Sections 4 pairs of legs No antenna

Arthropods

A. Arthropod Characteristics B. CrustaceansC. Arachnids 1. Physical Characteristics 2. Obtain Food/Oxygen D. Centipedes/MillipedesE. Insects

SpSpiders – Fangs to inject venom and suck in dissolving tissue

Scorpians – stinger to inject venom

Ticks - parasites

Arthropods

A. Arthropod Characteristics B. CrustaceansC. Arachnids D. Centipedes/Millipedes 1. Physical Characteristics 2. Obtain Food/Oxygen E. Insects

• 2 Body Sections• 2 or 4 legs per segment• 1 pair of antenna

Arthropods

A. Arthropod Characteristics B. CrustaceansC. Arachnids D. Centipedes/Millipedes 1. Physical Characteristics 2. Obtain Food/Oxygen E. Insects

• Centipedes – carnivores that inject venom into prey

• Millipedes - scavangers that mostly eat decaying leaves

Arthropods

A. Arthropod Characteristics B. CrustaceansC. Arachnids D. Centipedes/MillipedesE. Insects 1. Physical Characteristics 2. Obtain Food/Oxygen

• 3 Body sections• 6 Legs• 1 Pair of antenna

Arthropods

A. Arthropod Characteristics B. CrustaceansC. Arachnids D. Centipedes/MillipedesE. Insects 1. Physical Characteristics 2. Obtain Food/Oxygen

• Specially adapted mouth parts

• Carnivores• Herbivores• Scavangers