AP Biology Chapter 34 Invertebrates
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- The Longitudinal, flexible rod located between digestive tube and nerve cord.
- Gives Skeletal Support
Dorsal Hollow Nerve Cord
- Develops into central nervous system
- Develops from ectoderm
Pharynegeal Gill Slits
Allows water to exit the mouth without going through the digestive tract
Allow life cycle to be completed entirely on land. Self-sufficient.
Organism that is cold blooded.
Organism that are warm blooded.
Mammals that lay eggs.
Mammals that have live young in an external pouch.
Mammals that have longer gestation periods with complex placentas.
Embryo's undeveloped central nervous system.
Neural Crest Cells
Contribute to formation of several human structures (i.e. teeth, sense organs etc.).
Concentration of sensory and neural equipment in the head.
Structure in intestines of Gnathostomes to increase surface area and prolong passage of food along short digestive tract.
Encase eggs in protective cases and lay them outside of mom.
Provide nutrients through placenta (live young).
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