Chapter 11. I. Multicellular II. Eukaryotic III. Specialized for different functions IV. Have a...
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Transcript of Chapter 11. I. Multicellular II. Eukaryotic III. Specialized for different functions IV. Have a...
scienceChapter 11
Animal characteristics
I. MulticellularII. EukaryoticIII. Specialized for different functionsIV. Have a protein called collagenV. Get energy by eating other organisms-
consumersVI. Digest own foodVII. Reproduce sexuallyVIII. Capable of movement
Animal characteristics
3 Characteristics for animal classification
Vertebrates- animals with a backbone Invertebrate- animals without a backbone
backbones
Radial symmetry- Body parts are arranged in a circle around the center of the body.
Bilateral symmetry- Body parts are arranged the same way on both sides of the body.
Asymmetry- Body parts are not arranged in any particular way.
Symmetry
When scientists classify an animal`s DNA it is called molecular classification.
Molecular classification
Characteristics of all vertebrates
nerve chordTailPharyngeal pouch
chordate
FlexibleRodExtend to the length of a body
notochord
Connects all nerves
Spinal chord
Well developed organisms.
vertebrae
5 major groups of vertebrate
Have gills and fins Jawless fish, cartilaginous fish, and bony
fish.
fish
Lack jaws
Jawless fish
I. Frogs, toads, and salamandersII. Skeletons and legsIII. Smooth, and moist skinIV. Develop lungsV. Live on land
amphibians
SkeletonsCartilage
Cartilaginous fish
No cartilageGrouped together
Bony fish
I. Lizards, snakes, turtles, crocodiles, and alligators
II. Water proof skin with scalesIII. 3-chambered heartsIV. LungsV. Lay eggs on land
reptiles
I. 2 legsII. 2 wingsIII. Ducks, flamingoes, penguins, etc.IV. Make nests to hold eggsV. 4-chambered heartsVI. BeaksVII. Digestive system
birds
I. Whales, dolphins, humans, etc.II. FurIII. Chew with teethIV. Nervous systemV. Produce milk
mammals
The end