Chapter 17 Biology
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Created by:
alligordon15 on May 1, 2012
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26 terms
Terms | Definitions |
|---|---|
 porifera | These are sponges that are sessile and asymmetrical and are made up of collagen and sphericals |
| porifera | can regenerate and are hermaphrodites |
| cnidarians | these have 2 body types and only one opening |
| polyp | 1 type of cnidarian that is a sessile hydra |
| medusa | 1 type of cnidarian that is motile and is a jellyfish |
| cnidarians | can perform both asexual and sexual reproduction (process called budding), possess cnidocytes (stinging cells) and has a nervous system (nerve net) |
| cnidarians | have a sac gut the only invertebrate with radial symmetry |
| flatworms | are Platyhelminthes that are parasites (found in host cells) |
| flatworms | have a central/advanced nervous system,an eye spot, bilateral structure and are hermaphrodites |
| roundworms | AKA Nematodes: sexual reproduction only 2 openings (complete digestive tract) |
| annelids | earthworms/leeches: segmentation esophagus, pharnyx, crop & gizzard with 2 openings |
| annelids | closed circulatory system (and have a heart) ventral nerve cord have sensory antennae (more advanced nervous system) |
| arthropods | crabs and insects: have an exoskeleton made of chitin (for support) has 3 separate body regions: head, thorax and abdomen |
| arthropods | has book lungs and external gills with an open circulatory system |
| dorsal | back |
| ventral | front |
| anterior | top |
| posterior | bottom |
| flatworms | which type has an eyespot? |
| annelids | which type has a closed circulatory system? |
| arthropods | which type has an open circulatory system? |
| cnidarians | which were the first to become motile? |
| cnidarians | which type has stinging cells? |
| sessile | cannot move |
| animal | which kingdom? · Heterotrophs (never photosynthetic) · Eukaryotes · Multicellular · Sexual Reproduction · Gas exchange · Inverts- verts (no backbone) |
| cnidarians | everything has bilateral symmetry EXCEPT? |
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