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100
a group of similar cells that performs a specific function
What is tissue
100
invertebrates that have stinging cells and take food int a central body cavity
what is cnidarians
100
an outer skeleton
What is exoskeleton
100
have three characteristics, a notochord, a nerve cord, and pouches in the throat area
What is chordates
100
vertebrate that live in water and uses find to move
What is fish
200
is made up of different tissues
What is organ
200
invertebrates
animals that do not have backbones are __________
200
an invertebrate that has an internal skeleton and system of fluid-filled tubes
What is echinoderm
200
a flexible rod that supports a chordates back
What is notochord
200
tissue more flexible than bone
What is cartilage
300
tissues, organs, and organ systems
What is the organization of an animal's cells into their higher levels of structures
300
sponges, cnidarians, flatworms, roundworms, segmented worms, mollusk arthropods, and echinoderms
what are the main invertebrates groups
300
an internal skeleton
What is endoskeleton
300
backbone is made up of a stack of many small boned
What is vertebrae
300
a vertebrate that is enothermic
What is amphibian
400
if imaginary lines can be drawn through a center point to divide it into two mirror images
What is radial symmetry
400
invertebrates with a soft unsegmented bodies that are often protected by a hard shell
What is mollusks
400
no spine
invertebrates have ______
400
an animal that produced little internal body heat
What is ectotherm
400
is an ectothermic vertebrate that has scaly skin and ling and lays eggs on land
What is reptile
500
can be divided it into halves that are mirroring images of each other
What is bilateral symmetry
500
invertebrates that have a hard outer covering, segmented bodies, and pairs of jointed appendages
What is arthropods
500
they all have stinging cells and take food into a central body cavity
how are all cnidarians alike
500
an animal that controls the internal heat it produces and regulates its own temp
What is endotherm
500
endothermic vertebrates that have skin covered with fur and hair
What is mammal