Arthropods Chapter 28
Characteristics of Arthropods ► Exoskeleton which must be shed when the organism is growing…..shedding of the exoskeleton and the formation of the new skeleton is called molting ► Jointed appendages ► Segmented bodies
5 groups of Arthropods ► Insects ► Crustaceans ► Arachnids ► Centipedes ► Millipedes
Insects ► 6 legs ► 3 body parts a) Head region b) Thorax region c) Abdomen ► Antennae
Insects…3 body sections
Some Insects Fly
Some Insects Jump
Some Insects Look Scary
Mouth Parts of Insects
Insect’s Compound Eye
Next Group Arachnids ► 8 legs ► No antennae ► No compound eyes but simple eyes ► 2 body parts a)Head thorax are one part b) Abdomen is other part
Spiders
► Do spiders have antennae????
Do Spiders Have Compound Eyes??? ► No
If a spider is venomous, what does it use to put the venom into its prey? ► fangs
Other Arachnids
Next Group of Arthropods ► Crustaceans
Characteristics of Crustaceans ► Two body sections a) Head and thorax are together b) Abdomen ► Antennae ► Compound eyes
Examples of Crustaceans
Millipedes ► Next group of Arthropods ► Two pairs of legs on each segment
Millipede..2 pairs of legs on each segment
Centipede...another type of Arthropod ► One pair of legs on each segment