1.What does annelid mean? 2.What are characteristics of annelids? 3.Give examples 4.What are mollusks? 5.What is the only asymmetrical phylum? 6.Which.

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Presentation transcript:

1.What does annelid mean? 2.What are characteristics of annelids? 3.Give examples 4.What are mollusks? 5.What is the only asymmetrical phylum? 6.Which have radial symmetry? 7.What is the least advanced phylum? 8.What are the three classes of mollusks and what do each mean? 9.Give an example of each

5/10 1.What does arthropod mean? 2.What are characteristics of arthropods? 3.What are the classes of arthropods? 4.Which one does a crayfish belong to? 5.What is an annelid? 6.How do they move? 7.What is a mandible? 8.What is the difference between centipedes and millipedes?

Arthropod “jointed leg”

Basic Characteristics  Largest group of invertebrates  live in air, on land, and in water  bilateral symmetry  reproduce sexually  well developed nervous system

Specific Phylum Characteristics Exoskeleton Exoskeleton – a. a. external skeleton, tough outer covering covering does not grow, organisms must shed and replace (molting) b. b. b. b. made of Chitin Segmented Segmented Body

Specific Phylum Characteristics cont. 3. Jointed appendages; used for movement, eating and obtaining food,senses, and defense 4. Have antennas 5.5. Have compound eyes; many identical light- sensitive cells

· Hard exoskeletons · 2 pairs of antennae, sensory organ · 2 compound eyes · mouthparts used for crushing, grinding, and chewing Ex. crabs, lobsters, crayfish, barnacles, shrimp crustacean

CentipedeCentipede –1 –1 pair of legs per segment –Have –Have poisonous claws MillipedeMillipede –2 –2 pairs of legs per segment

·· two body sections (cephalothorax, abdomen) 8 legs, attached to Cephalothorax NO antennae Ex.Ex. Spiders, scorpions, ticks, mites

·· Largest group of arthropods Make up majority of invertebrates 3 body sections Head, Thorax, Abdomen ·2 compound eyes 6 legs attached to thorax 1 pair of antennae Some have wings many have defense mechanisms (stingers, camouflage, etc) · many· many under go a form of metamorphosis metamorphosis

Metamorphosis ChangingChanging form from egg to adult

Insect Examples: GrasshopperCockroachButterflyGrasshopperCockroachButterfly BeetlesWaspsantsBeetlesWaspsants

is the fastest flyer has the longest migration has the most toxic venom is the heaviest has the largest swarm is the largest is the loudest is the most heat tolerant has the greatest bioluminescence is the smallest adult is the fastest runner has the largest wingspan is the longest is the most tolerant to cold lays the smallest eggs The University of Florida Book of Insect Records 2008