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Classification of Animals Animals With Backbones ___________________________, ___________________________, ___________________________, ___________________________, and ___________________________. Animals with backbones are called ____________________________. Vertebrates include many different kinds of animals. They can be found just about everywhere – in oceans, rivers, forests, mountains, and deserts. Animals with backbones can be broken up into smaller groups by characteristics. 1. Fish Fish Characteristics They are the largest group of vertebrates. They can be further categorized ________________________-Jawless fish ________________________-sharks and rays Skeletons of cartilage _________________________-bony fish Skeletons of bone Their body temperatures vary in the water. ______________________________________ They breathe through ______________________. 2. Amphibians Amphibian Characteristics Their body temperature varies with their surroundings. __________________________________________ Amphibians hatch from eggs in the ____________________ and they can live on land as an adult. Young amphibians breathe through _____________ like fish. Adult amphibians breathe air from _______________________. Example: _________________________ 3. Reptiles Reptile Characteristics They lay their eggs on _______________________. They have dry scaly skin. They can include animals as large as a crocodile. Their body temperature varies with their environment. _____________________________________ They live in hot, dry deserts and in warm, wet tropical rain forests. 4. Birds Bird Characteristics Birds lay ____________________ shelled eggs that hatch in their nest. Birds are vertebrates that have wings and they are covered with feathers. The bird’s skeleton is very light in weight. Their bones are ____________________________ This helps them to fly. Are thought to have evolved directly from ________________________. Regulate their own body temperature through metabolism ______________________________ 5. Mammals Mammal Characteristics Their young grows inside the mother. ______________________________l birth Have hair ___________________ and ______________________. They feed ___________ to their young. Regulate body temperature through metabolism ____________________________________ Invertebrates Invertebrate Classification What is an Invertebrate? Invertebrates are animals that do not have _________________________. 97 % of the animal kingdom is made up of invertebrates. Insects and some other invertebrates have ____________________________. An Exoskeleton is a hard outer covering that protects an animal’s body and gives it support. There are six groups of invertebrates. They are: 1. __________________________-Sponges Sponges Characteristics They look like plants but they are animals. Sponges stay fixed in one place-_________________________________. Their bodies are full of holes and their skeleton is made of spiky fibers. Water flows through the holes of their body which enables them to catch food-filter feeders. 2. _________________________________: Corals, Hydras, and Jellyfish Characteristics Corals look like plants but they belong to the animal kingdom. They have soft tubelike bodies with a single opening surrounded by armlike parts called tentacles. They feed by catching tiny animals in their tentacles. Hydras have tentacles that catch their food. They move from place to place-_____________________________________. 3. Worms: Flatworms, Roundworms, and Segmented worms Worm Characteristics Worms are tube-shaped invertebrates which allows them to be put into groups. They can be found in both land and water environments. a. ____________________________________________-Flatworms They have a head and a tail, and flattened bodies. A tapeworm is a flatworm that can live inside the body of animals and humans. __________________________________ b. ___________________________-Roundworm They have rounded bodies. Includes Ascaris, hookworms, Trichinella, & pinworms c. __________________________-Segmented worms The _________________________________ belongs to this group of worms. Body divided by grooves into ______________________________ Evolved from roundworms. Have a real circulatory system. Rudimentary nervous system. ___________________________________________________________ 4. _______________________________________-Characteristics Starfish and Sea Urchins Have tiny tube feet and body parts arranged around a central area. No ________________________ Rudimentary nervous and circulatory system The hard, spiny covering of the starfish gives the animal protection. Can ____________________________________ lost or injured parts. 5. __________________________________ Mollusk Characteristics A ______________________ body Most have internal or external _____________________ Muscular foot and/or tentacles Distinguishable head and foot region Have a heart, blood vessels, digestive system and nervous system ________________________: a series of teeth on cartilage base for feeding include snails, sea slugs, octopuses, squid, and bivalves such as clams, mussels and oysters. 6. Arthropods Arthropod Characteristics Arthropods are a group of invertebrates with _____________________ legs and hard exoskeleton that protect the arthropod. As it grows, it _______________________, or sheds its old exoskeleton. Then it grows a new exoskeleton that allows its body to continue to grow. The largest group of arthropods are insects. Arthropods: Insects, Spiders, and Centipedes/Millipedes __________________________________ exoskeleton-must be shed during growth Paired appendages are jointed Segmented bodies arranged into regions ___________________, ___________________, ___________________, ______________________________ symmetry Taxonomy Subphylum Chelicerata Order Hymenoptera - ants, bees, wasps Class Merostomata - horseshoe crabs, Order Coleoptera - beetles Class Arachnida - spiders, scorpions, ticks, mites Order Lepidoptera - butterflies, moths Subphylum Crustacea - crustaceans Order Diptera - flies, mosquitoes Subphylum Uniramia Order Orthoptera - grasshoppers, crickets, roaches Class Chilopoda - centipedes Order Odonata - dragonflies Class Diplopoda - millipedes Order Isoptera - termites Class Insecta - insects Body symmetry Types of circulatory systems Summary Vertebrates Invertebrates