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Lecture 12
Arthropods and Chordates
Term | Definition |
---|---|
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). |