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15 Cards in this Set
- Front
- Back
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What was the first phylum of animals to have tissues?
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Chidarians
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What was the first phylum of animals to have organs?
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Flat Worms
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What was the first phylum of animals to have a complete digestive system?
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Roundworms
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What was the first phylum of animals to have a compete body cavity (coelom)
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Mollusks
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What is phylum of animals to have no central brain? (a starfish)
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Echinoderms
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What is phylum of animals to be the most advanced?
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Chordates
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What are the 4 things all vertabrates must have(at one point) to be considered a vertabrate?
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1. backbone
2. nerve cored on the dorsal side 3. pharynx 4. embryos have tails |
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Do sharks have bones?
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nope. they are cartilaginous
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What was the first phylum of animals to be on land?
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amphibians
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What was the first vertabrates to not rely on water?
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reptiles
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what is the difference between oviparous and viviparous mean?
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oviparous means eggs hatch on the outside. viviparous means live birth
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in latin, mamma means?
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breasts.
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All mammal species must...
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have hair
secrete milk |
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what is the only flying mammal?
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the bat.
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What are the 3 categories of mammals?
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monotremes-egg laying
marsupials-pouch eutherians-placentals. |
