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37 Cards in this Set
- Front
- Back
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Porifera |
Phylum: Sponges |
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Cnidaria |
Phylum: Jellyfish |
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Platyhelminthes |
Phylum: Flatworms |
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Nematoda |
Phylum: Roundworms |
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Annelida |
Phylum: Segmented Worm |
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Echinodermata |
Phylum: Starfish |
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Cephalization |
Concentration of sense organs and nerves at a definite head end |
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Bilateral Symmetry |
An organism which can be cut one way for approximate mirror images. |
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Radial Symmetry |
An organism which can be cut multiple ways for approximate mirror images. |
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Segmentation |
Division of a body into segments, with each segment having a specific function. |
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Organ System |
A system of organs that work together to complete an individual task. |
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Amoeboid Cell |
Cells in a sponge that absorb digested food (which work together with collar cells). |
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Ectoderm |
The outer layer of skin. |
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Mesoglea |
The green jelly-like substance in between the ectoderm and endoderm in a jellyfish. |
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Mesoderm |
The middle layer of skin. |
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Endoderm |
The inner layer of the skin. |
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Coelom |
A body cavity that allows for organs and organ systems. |
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Pseudocoelom |
A false body cavity found in platyhelminthes. |
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Collar Cell |
Enzymes in a sponge which digest food (which work together with amoeboid cells). |
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Spicule |
Sharp spines forming a skeleton in a sponge. |
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Osculum |
A big opening in a sponge which allows water to pass through. |
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Medusa |
The sexual stage of a jellyfish. |
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Polyp |
The asexual stage of a jellyfish. |
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Gastrovascular Cavity |
A cavity used for storage and digestion. |
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Hermaphrodite |
An organism with both male and female parts. |
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Pharynx |
An organ which sucks in food. |
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Crop |
The part in the digestive system of an Annelids that stores food. |
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Gizzard |
In an Annelida, the part of the digestive system (after the crop) which grinds up food. |
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Intestine |
Tubes which transport food through an organism. |
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Cnidoblast |
A cell in cnidaria which capture food. |
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Nematocyst |
Harpoon-like attachments that capture food. |
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Pedicellaria |
Microscopic sensors which keep the madreporite clean. |
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Ascaris |
Common name for Roundworm/Nematoda. |
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Planarian |
Common name for Flatworm/Platyhelminthes. |
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Earthworm |
Common name for Segmented worm/ Annelida. |
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Invertebrate |
An animal without a back bone. |
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Phylum |
A large group of organisms with similar characteristics. |
