Chapter 16 Fishes, Amphibians, and Reptiles

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Chapter 16Fishes, Amphibians, and Reptiles
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An animal with a skull and a backbone includes
mammals, birds, reptiles, amphibians and fish
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Vertebrate

• An animal with a skull and a backbone includes
  mammals, birds, reptiles, amphibians and fish

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Segments of bone or cartilage that interlock to
form a backbone
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Vertebrae

• Segments of bone or cartilage that interlock to
  form a backbone

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An animal that maintains a constant body
temperature despite temperature changes in its
environment, warm blooded
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Endotherm

• An animal that maintains a constant body
  temperature despite temperature changes in its
  environment, warm blooded

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An animal whose body temperature fluctuates with
the temperature of its environment, cold blooded
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Ectotherm

• An animal whose body temperature fluctuates with
  the temperature of its environment, cold blooded

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Fanlike structures that help fish move, turn,
stop and balance
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Fins

• Fanlike structures that help fish move, turn,
  stop and balance

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Bony structures that cover the skin of bony fishes
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Scales

• Bony structures that cover the skin of bony fishes

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Row of tiny sense organs along the sides of a
fishs body
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Lateral line system

• Row of tiny sense organs along the sides of a
  fishs body

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Organs that remove oxygen from the water and
carbon dioxide from the blood
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Gills

• Organs that remove oxygen from the water and
  carbon dioxide from the blood

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Small, sharp toothlike structures on the skin of
cartilaginous fishes
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Denticles

• Small, sharp toothlike structures on the skin of
  cartilaginous fishes

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Balloon-like organ that is filled with oxygen and
other gases gives bony fishes their buoyancy
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Swim Bladder

• Balloon-like organ that is filled with oxygen and
  other gases gives bony fishes their buoyancy

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A sac-like organ that takes oxygen from the sir
and delivers it to the blood
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Lung

• A sac-like organ that takes oxygen from the sir
  and delivers it to the blood

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Aquatic larvae of an amphibian
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Tadpole

• Aquatic larvae of an amphibian

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Process in which an insect or other animal
changes form as it develops from an embryo or
larva to an adult
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Metamorphosis

• Process in which an insect or other animal
  changes form as it develops from an embryo or
  larva to an adult

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Prehistoric, reptile ancestor of mammals
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Therapsid

• Prehistoric, reptile ancestor of mammals

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Egg containing amniotic fluid to protect the
developing embryo usually surrounded by a hard
shell
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Amniotic Egg

• Egg containing amniotic fluid to protect the
  developing embryo usually surrounded by a hard
  shell

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