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Invertebrates
Invertebrate Study
| Term | Definition |
|---|---|
| Arachnid | 4 pairs of jointed legs |
| Species | means kind, genus ____ |
| LInnaeus | Father of Classification |
| tube feet | used for movement in echinoderms |
| Porifera | pore bearing, sponges |
| Asymmetry | without symmetry |
| Crustacean | 5 pairs of jointed legs |
| Arthropods | means jointed legs |
| Echinoderm | having spiny skin |
| Insect | having 3 body parts, head abdomen and thorax |
| Genus | first part of the scientific name |
| Worms | flat (planeria) , round (nematode) , and segmented (annelids) |
| sessile | animals that don't move around |
| book lungs | arachnids use for breathing |
| earthworms | eat dirt |
| annelid | means having rings, earthworm is the example |
| molt | insect grows loose their exoskeleton |
| crop | stored crushed food in earthworm |
| gizzard | grinds food for earthworms |
| spicules | skeletal-like system in spoges |
| setae | used to hold onto the soil for earthworms |
| Cnidaria | stinging celled organisms, jellyfish, coral |
| bilateral symmetry | body parts cut in 1/2 mirror image. |
| Mollusks | gastropods, bivalves, cephalpods |
| invertebrate | animals lacking backbone |
| vertebrate | animals with a backbone |
| free-living | animals that can move around |
| radula | mollusk tongue used for scraping food |
| trachea | opening in insects used to breath |
| open system | blood vessels to travel around the body |