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invert. vocab
| Term | Definition |
|---|---|
| Invertebrate | A group of organisms without a backbone |
| annelida | A group of segmented worms |
| Vertebrate | A group of organisms that have a backbone |
| Cnidarian | A group of invertebrates that have stinging cells and take their food into a hollow central cavity |
| Cephalopod | A mollusk whose feet are adapted to form tentacles around their mouths |
| Bivalve | A mollusk that has 2 shells held together by hinges and strong muscles |
| Echinoderms | A radially symmetrical invertebrate that lives on the ocean floor |
| Gastropod | A mollusk that has a single shell or no shell at all |
| Mollusk | An invertebrate with a soft, unsegmented body that is often protected by a hard outer shell |
| Porifera | Group of invertebrates that are asymmetrical filter feeders that live in the ocean |
| Bilateral Symmetry | When an organism only has 1 line of symmetry |
| Radial Symmetry | When an organism has multiple lines of symmmetry |
| Asymmetry | When an organism has no symmetry |
| Polyp | A group of cnidarians that has a body plan with the mouth on the top |
| Medusa | A group of cnidarians that has a body plan with the mouth opening at the bottom |
| Arachnid | An artropod that has 2 body sections and 4 pairs of legs |
| Arthropod | An invertebrate that has an external skeleton, a segmented body and jointed appendages |
| Crustacean | An arthropod that has 2 or 3 body segments and usually 3 pairs of appendages for chewing |
| Exoskeleton | an outer skeleton |
| Insect | An arthropod with 3 body sections, 3 pairs of legs, one pair of antenna and usually 1 or 2 pairs of wings |
Created by:
lipscold
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