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Clasifacation
Must Do it otherwise not get a good score
39
Science
7th Grade
04/06/2011

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Term
Vertebrates
Definition
animals which have internal skeletons or backbones are grouped together.
Term
invertebrates
Definition
animals with external or no skeletons.
Term
exoskeleton
Definition
external skeletons
Term
Endoskeleton
Definition
not allow flexibility for the twisting and turning actions that are possible for animals with an inside skeleton
Term
ectothermic
Definition
Cold Blooded organism
Term
endothermic
Definition
warm blooded organism
Term
Dichotomous
Definition
there are only two choices at each branch.
Term
organisms
Definition
A living thing
Term
Taxonomy
Definition
The science of classifying orginisms
Term
Microscopic
Definition
Need to see with microscop(cannot see with your own eyes
Term
macroscopic
Definition
can be seen with a microscope
Term
aves
Definition
birds
Term
Avery
Definition
place for birds (cage)
Term
mammals
Definition
they feed on milk
Term
pharyngeal slits
Definition
members of this group also usually possess pairs of " " or gill like openings in the neck region
Term
fish(cartilaginous skeleton)
Definition
skeleton made of cartilage
Term
fish (bony skeleton)
Definition
Skeleton made out of bone
Term
amphibia
Definition
eggs without a shell
Term
reptiles
Definition
changing body temperature
Term
jawless fish
Definition
no paired fins
Term
placental
Definition
animals that grows inside the body of their mother. also known as eutherian
Term
eutherian
Definition
Same as placental
Term
marsupials
Definition
are mammals that give birth when their young are at a very early stage of developement
Term
monotremes
Definition
mammals that lays eggs are called monotremes.
Term
platyhelminths
Definition
characteristics are flat body with no segments, head-like region and mouth opening but no anus.
Term
cnidarians
Definition
characteristics are most live in the sea, soft hollow body, only one body opening, live singly or in colonies, tentacles with stinging cells, no body organs such as heart or lungs.
Term
arthropods
Definition
found in land and found in water, exoskeleton, segmented bodies, jointed and paired legs, most have antennae and compound eyes, most that live on land use tubes in the side of the body to breath, most that live in water use gills to breathe.
Term
nematodes
Definition
worm-like body with no segments, mouth and anus, found in water, soil, plants and animals.
Term
echinoderms
Definition
found only in the sea, spine skin and arms that radiate from the center of the body, tube feet for movement, mouth and anus, body pattern based on five parts.
Term
poriferans
Definition
found in water, spongy body with many holes, food and water enter though thin holes in body, wastes go out though a single large opening, usually fixed in one place to rocks or shells, skeleton made of glassy or chalky needles or spongy fibres
Term
annelids
Definition
most found in water; some in soil, segmented worm, round, soft bodied, take in air though moist skins
Term
molluscs
Definition
most found in water; some on seashore and land, soft unsegmented body, usually covered with a protevtive shell, well formed head with eyes and/or tentacles, mouth and anus, muscular food for movement.
Term
Gymnosperm
Definition
Conifers Found on land, have true roots, stems and leaves, no flowers, form seeds between scales of a woody cone, most have fine, needle-like leaves
Term
Angiosperms
Definition
Flowering plants, most found on land, most common type of plant, produce flowers, fruits and seeds, have true roots, stems and leaves
Term
Bryophytes
Definition
Mosses and liverworts, found mainly in damp places, root like structures very fine and hair like, simple leaves or leaf like structures, usually only several centimeters long, spores are formed in a capsule.
Term
Pteridophytes
Definition
Ferns, found in moist shaded areas, no flowers, cones or seeds, spores, rather than seeds, found on the underside of leaf like frond, have proper roots and stems, most less than a meter high (except tree ferns)
Term
Algae
Definition
all live in water, often unicellular, no true roots, stems, leaves or flowers, no special tissue for transporting food or water, divided into groups depending on their colour, make their own food using photosynthesis
Term
fungi
Definition
no true roots, stems, leaves or flowers, usually multicellular some unicellular, no chlorophyll and unable to make their own food, usually obtain their food from other living or dead organisms, produce enzymes which break down food outside their cells, broken-down food is absorbed through their cell walls.
Term
Lichens
Definition
Found on bare rocks, bark of trees, in cold polar regions and on mountain tops, no true roots, stems, leaves or flowers, made up of two different organisms: an alga and a fungus, algal cells live among tiny fungal threads, algal cells photosynthesise and supply the fungus with food, fungus, provides protection and anchorage for the algal cells, grow very slowly and are extremely long lived, often responsible for breaking down rocks, allowing other organisms to grow.
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