Animals
Characteristics of Animals Multicellular eukaryotes Multicellular eukaryotes Ability to move to reproduce, obtain food, protection Ability to move to reproduce, obtain food, protection Do NOT have cell walls Do NOT have cell walls Heterotrophs: consume other organisms for energy Heterotrophs: consume other organisms for energy
Characteristics of Animals Digestion of food and storage for energy later (ATP) Tissues, organs, organ systems (nerves and muscles unique to animals) Most reproduce sexually
Invertebrates: Animals that lack backbones Animals that lack backbones 95% of the animal kingdom 95% of the animal kingdom Examples: sponges, worms, mollusks, arthropods Examples: sponges, worms, mollusks, arthropods Hydras Hydras Hydras
Vertebrates: Animals that have backbones Animals that have backbones All have bilateral symmetry (can be divided into two identical halves) All have bilateral symmetry (can be divided into two identical halves)
Examples of Vertebrates: Fish: Fish: Aquatic, have gills Aquatic, have gills 2-chambered heart 2-chambered heart Usually lay eggs Usually lay eggs Pirahna videos: Pirahna videos: Video 1 Video 2 Video 3 Video 1 Video 2 Video 3
Jawless Fish: Hafish Clothing? Hagfish Slime River Monsters-Sea Lamprey
Examples of Vertebrates: Amphibians: Live in water and on land Moist skin Eggs lack shells so must be laid in moist areas Breathe with lungs or skin Ex: frogs, toads, salamanders
Examples of Vertebrates: Examples of Vertebrates: Reptiles: Reptiles: Scaly skin Scaly skin Amniotic egg Amniotic egg Ex: snakes, turtles, crocodiles Ex: snakes, turtles, crocodiles
Examples of Vertebrates: Birds: Birds: Feathers Feathers Hollow bones Hollow bones Wings for flight Wings for flight Ex: flamingo, owl, eagle, robin Ex: flamingo, owl, eagle, robin
Examples of Vertebrates: Mammals: Hair or fur Milk Bear live young (babies) instead of eggs (exception: marsupials & platypus) marsupials Placental mammals: baby develops in uterus Ex: humans, dog, horse, whale, elephant, bat