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Lecture 12

Arthropods and Chordates

Arthropods consist of: Insects, spiders, millipedes, crustaceans, and trilobites
What kind of eyes do most arthropods have? Compound.
Crustaceans consist of: Shrimp, lobsters, crabs.
How do spiders ingest their prey? Inject digestive enzymes then suck up liquefied tissues.
Which one has two legs per segment and can be harmful to humans? Centipedes.
Which one has four legs per segment? Millipedes.
How do most crustaceans get oxygen? Through their gills.
What are four examples of echinoderms? Sea stars, sea urchins, sea cucumbers and sand dollars
What are the 3 body regions of insects? Head, thorax, and abdomen
The main feature of arthropods is a segmented body covered by: Exoskeleton made of chitin.
Sea stars have an internal skeleton made of: Ossicles.
What type of animal is the only invertebrate capable of flying? Insects.
The insects have special structures for feeding. How does each structure help the insect get food? Lips for sopping liquid food. Long proboscis to get nectar out of a flower. Piercing structures to suck blood.
Pharyngeal slits are these two things on both fish and humans. Gills: Fish Jaws and inner ear bones: Humans
The dorsal hollow nerve cord becomes this. Spinal cord.
The the notochord becomes this in animals with bone. Vertebral column (backbone).
Created by: bngrimes1995
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