A section in the Vertebrate Study Guide
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What 3 characteristics are all shared by chordates at some point in their life? | Notochord; Nerve cord; Gill slits
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| What does the nerve cord end up developing into? | Brain
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| What is the controversy with gill slits? What is the alternate name for them now? | Great controversy that humans/mammals don’t actually have “gills” but pharyngeal clefts that develop into something else; pharyngeal slits.
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| What type of skeleton do vertebrates have? | endoskeleton
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| What is the purpose of the skeleton? | support & protect the internal organs
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| What are ectotherms? What is another name for ectotherms? | body temperature changes as surroundings change; cold-blooded animals
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| What are endotherms? What is another name for endotherms? | body temperature doesn’t change as surroundings do; warm-blooded animals
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| What is the largest group of vertebrates? | fish
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| What are gills? | fleshy filaments where CO2and oxygen are exchanged.
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| What are the 3 types of fish? Give an example of each. | Bony fish-goldfish; jawless fish-lamprey; cartilaginous fish-shark
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| What is cartilage? | tough, flexible tissue similar to bone but not as hard or brittle.
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| What is the swim bladder? | air sac that helps control the depth at which the fish swims
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| What happens as gases move in and out of the swim bladder? | Deflates & inflates as gases move between the swim bladder & blood. Fills with glassfish rises and vice versa
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| What is the purpose for fins? | Steering the fish
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| What do jawless fish have? | scale-less, long, tube-like bodies; Round, muscular mouth without a jaw
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| What are the cartilaginous fish made of? | cartilage
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| What are most cartilaginous fish? | predators
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Created by:
GwendolynetheOC
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