14 terms

5th Grade Animal Classification

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Amphibians
An animal that typically begins life in water, then moves to land.
• Live in water and land and breathe with gills when they are young.
• As they become adults, they begin to spend more time on land.
• Breathe with lungs when they are adults
All amphibians are cold-blooded
Examples: Salamanders, newts, frogs, toads
Reptiles
Snakes, turtles, tortoises, lizards, crocodiles and alligators. All reptiles have tough outer skin, and most lay eggs.
• Live on land and breathe with lungs
• Covered with scales and live in warmer climates
• Reproduce by laying eggs
Warm-Blooded
Birds and mammals are warm-blooded. They maintain constant internal body temperatures. Their body cells produce enough heat to keep their bodies warm even when the temperature outside their bodies is very low.
Insects
Flys, Bees, beetles, ants
A small animal that has six legs and a body formed of three parts and that may have wings
Fish
Most fish have a bony skeleton, but some, such as sharks, have a skeleton that is only cartilage. Fish have gills that allow them to breathe in water.
• Fish have scales to protect their bodies
• Cold-blooded (same temperature as surroundings)
Mammals
The definition of a mammal is a type of warm-blooded animal that makes milk to feed their babies and usually has hair.
Cold-Blooded Vertebrates
Reptiles, amphibians, and most fish are called cold-blooded animals depends on the temperature outside their bodies.
Birds
Birds have wings that allow them to fly. Birds have feathers along with aiding in flight, feathers help birds keep body heat. Most species of birds have light bones.
Vertebrates
Animals that have a backbone.
Invertebrates
Animals that lack an internal skeleton or bones.
Arthropods
Lobsters, crabs, spiders, and insects are all types of arthropods, the animal group with the most species.
Exoskeleton
Have jointed parts surrounded by a hard covering.
A rigid external covering for the body in some invertebrate animals, especially arthropods, providing both support and protection.
Mollusks
Clams, oysters, snails, squid and octopus.
Mollusks have soft bodies and most have shells. They live, eat and move in many different ways.
Echinoderms
"spiny-skinned"
Echinoderms are Invertebrates. They have several arms (5 or more, They have no heart, brain, nor eyes, but some brittle stars seem to have light sensitive parts on their arms. Their mouth is situated on the underside and their anus on top (except feather stars, sea cucumbers and some urchins).
Examples: starfish, sea cucumbers, basket stars, sea urchins

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