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21 Cards in this Set
- Front
- Back
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How do we define animals? Be familiar with the various characteristics and how those characteristics separate animals from other groups: |
-Animals: multicellular heterotrophs with unwalled cells -most ingest food -most are motile in at least part of their life cycle |
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What organism is likely the common ancestor of all animals? |
-Protists |
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Porifera What are the two specialized cells found in sponges? What are their functions? |
-Flagellated collar cells (line inner surface) -Flat non-flagellated cells (outer surface) |
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Porifera How do sponges feed? |
-Suspension (filter) feeders |
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Porifera In what ways are sponges different from all other animal groups? |
-sponges have no true tissue |
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Cnidaria Describe the two variations on the basic body plan of cnidaria. Which of these is sessile? |
-Medusa: freefloating (jellyfish) -Polyp: sessile (Coral) |
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Cnidaria What is the name of the stinging cells found in cnidarians? |
-Cnidocyte |
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Platyhelminthes Basic body plan of a flat worm: |
-protosome -bilateral symmetry -acoelomate -incomplete digestive tract -f;attened body |
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Platyhelminthes What is the scolex of a tapeworm? |
-hooks and suckers |
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Nemotoda Basic body plan of a nematode: |
-bilateral symmetry -protosome -complete digestive tract -psuedocoelomate -presence of cuticle |
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Nemotoda What feature do nematodes have that allows them to exist in harsh environments? |
-cuticle: prevents drying |
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Mollusca Basic body plan of a mollusk (including 4 main parts): |
-protosome -bilateral symmetry -complete digestive system -coelom -Mantle, Radula, Foot, Head |
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Mollusca What is a radula? |
-tongue like part of mouth used for feeding |
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Mollusca What adaptions do cephalopods have to being effective mobile predators? |
- |
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Annelida Describe the basic body plan of an annelid (segmentation): |
-coelom -bilateral symmetry -Protosome -complete digestive tract -segmentation |
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Annelida Examples from this phylum: |
-earthworm -leeches -bristle worm |
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Arthropoda Describe the basic body structure of an arthropod: |
-protosome -bilateral symmetry -ceolom -completel digestive tract -jointed appendages -exoskeleton |
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Arthropoda -Four major groups of arthropods? Which is the most diverse? Which is primarily aquatic? What are chelicerates? |
1 .Chelicerates: specialized feeding structured and no antennae; include arachnids, and horseshoe crabs 2. Myriapods: long bodies; include centipedes and millipedes 3. Crustaceans: primarily aquatic 4. Insects:most diverse group |
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Echinodermata Basic body plan of an echinoderm: |
-larvae: bilateral symmetry; adults: radial symmetry -water vascular system -tube feet -deutrostome -no coelom |
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Echinodermata What is the water vascular system? What are tube feet and what are they used for? |
-Water Vascular System: water flows in and out to regulate pressure -tube feet: part of water vascular system that allow for movement and aid in grabbing food |
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Echinodermata -Besides sea stars what other organisms are in the phylum Echinodermata? |
-sea urchins -sea cucumbers |
