Science Chapter 1 Lesson 3

39 terms by kjones12345

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An animal with a segmented backbone.


Animals with nerve chords running down their backs.


inner skeletons

bone and cartilage

endoskeletons are made of this.

bony fish

Examples are trout, salmon, tuna, goldfish. They have hard, bony skeletons and breathe through gills.


Rays, skates and this sliky shark have skeletons made of these.


They have jaws, feathers and hard, bony skeletons. They breathe through lungs.


They have jaws, scales and hard bony skeletons.

examples of reptiles

snales, turtles, alligators and lizards.


They breathe through lungs and feed their young on mother's milk. Most live on land.

examples of mammals

humans, dogs, horses and whales.


Animals with four feet


Animals with two feet.


animals without backbones

More than 95 of animals are these



An invertabrate that has an external skeleton, a segmented body, and jointed appendages. Examples are insects, spiders, crab and shrimps.

flat and round worms

they live in water, in damp soil or inside other animals.


Examples are jellyfish, hydras and corals


these belong to a phylum called Porifera.


Examples are sea stars and sea urchins.


examples are clams, snails, oysters, squid and scallops.


these are invertebrates with tough exoskeletons


tough outer skeletons cover the organisms bodies and protect the animals from danger.

crustaceans, insects and arachnids

groups of arthropods

crabs, shrimp and lobsters

examples of crustaceans


most abundant animals in the ocean, there are more than 30,000 species.


largest group of arthropods.

insect body

these consists of a head, thorax and abdomen.

antennae and eyes

these help an insect sense the environment.


there include spiders, ticks, scorpions and mites.

these have four pairs of appendages, one or two body sections and no antennae



predators that feed mainly on insects.

parts of arthropods

abdomen, jointed legs, thorax, antennae and head

largest animals on earth

there are in the vertebrate class, not invertebrates.

These have stinging cells to capture fish


segmented worms

these have bodies separated into compartments.

Classes of vertebrates

reptiles, amphibians, birds and mammals.

jawless fish

these have soft skeletons and gills. specials include the hagfish and lamprey

lesson main idea

animals are classified according to whether or not they have backbones.

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