Unit 4 Animals

animal characteristics 3 interaction function To find food and avoid dangerous environments They use their sense organs to interact with their environments the sense organs work with the nervous system to interact with the environment 1 Symmetry Body parts are the same on both sides of the body Animals whose bodies are not the same are asymmetric * example: sponges 2 body organisation Animals need to move, breathe, grow, reproduce, excrete, and obtain nutrients. Animals´bodies need organs and systems to perform these

Has a vertebral column and hard internal skeleton classifying animals Has a vertebral column and hard internal skeleton Vertebrates hard internal skeleton vertebral column *with head, trunk, and limbs five groups *fish, amphibians, reptiles, birds, mammals Invertebrates haven´t got internal skeleton or vertebral column Some have a hard shell or exoskeleton all invertebrates are oviparous *they lay eggs

questions Animals are Multicellular or unicellular? True or False: The left side of an animal is the same as the right side of an animal. What is an example of an animal that is not symmetrical? what two things do animals need to perform vital functions? sense organs are connected to what system? Animals are Multicellular or unicellular? What are the three characteristics of animals? Animals are heterotrophic or autotrophic? True, except for some asymmetrical animals sponges Symmetry Body organization interaction function Organs and systems Nervous system

vertebrates: Fish Their bodies are important *fins to move them through the water *they can move up and down and side to side how their bodies function *live in the water use gills to breathe *are oviparous two types of fish *bony fish *cartilaginous fish Use fins to move

vertebrates: Amphibians physical appearance *Amphibians start their lives with gills and later develop lungs *have long, sticky tongues to catch insects how their bodies function *carnivores and mainly oviparous two types of amphibians *anuras (ex: toads and frogs) *urodelas (EX: salamanders)

True or False: Amphibians can breathe with both gills and lungs. Amphibians are oviparous or viviparous? Where do amphibians lay their eggs? What are examples of the two types of amphibians? What characteristics do they have? more questions What do invertebrates have that vertebrates do not? True or False: All Vertebrates are oviparous. True False: all fish have hard bony skeletons. True They haven´t got an internal skeleton. Some have an exoskeleton. Could be both but are mainly oviparous. They lay their eggs in humid areas or in water. False. All invertebrates are oviparous False. Some have skeletons made of cartilage Anuras: toads and frogs. Can jump large distances. Back legs are longer than front legs. Urodelas: Salamanders. Four legs and a long tail.

Vertebrates: Reptiles Physical Appearance *have tails and four legs (except for snakes) *thick, Scaly skin *Snakes use their strong muscles to move How their bodies function *Breathe with their lungs *eggs hatch on land far from water types of reptiles *squamata: lizards and serpents *testudines: tortoises and turtle *crocodilia: crocodiles and alligators

Vertebrates: birds Physical appearance have wings and hollow bones they are covered in feathers how their bodies function birds are oviparous have air sacs Types of birds flying birds (ex: dove) flightless birds (ex: penguin)

Vertebrates: mammals Physical appearance Humans *four extremities and hair cats, dogs, rabbits, etc *four extremities, fur, and a tail Dolphins * fins Bats * wings

vertebrates: Mammals how their bodies function Mammals feed their young with milk how their bodies function mammals breathe with lungs most important feature is: * female mammals feed their young with milk herbivore: feed on plants carnivore: feed on meat omnivore: feed on both meat and plants herbivore Carnivore Omnivore

Vertebrates: Mammals Types of mammals monotremes * mammals that lay eggs but feed their young with milk * example: platypus marsupials * viviparous but offspring grow in pouches on their body * Examples: kangaroos and koalas placental * viviparous and formed inside the mother * examples: humans, cats, dogs, rabbits... Marsupials Monotremes Placental

more questions what are two examples of the different bodies mammals can have? What are the three classifications of mammals depending on what they eat? What are the three types of mammals? Examples? What are two functions of feathers on birds? Why do birds need the air sacs connected to their lungs? What are two examples of flightless birds? to help maintain temperature help them fly Humans have four limbs and hair. Cats have four limbs, a tail, and fur. Bats have wings and dolphins have fins To increase their capacity and effectiveness. Herbivores, omnivores, and carnivores. Penguins, Emus, and ostriches. Monotremes: platypus Marsupials: kangaroo and koala Placental: humans, bunnies, cats...

Invertebrates Most distinguishing feature: Echinoderms Most distinguishing feature: * they do not have an internal skeletal system or a backbone the 6 groups of invertebrates: * Poriferas: sponges * cnidarians: jellyfish * annelids: earthworms * echinoderms: starfish * molluscs: Snails *arthropods: Butterflies Arthropods Annelids Porifera Molluscs Cnidarians

Invertebrates: Molluscs Physical appearance * many molluscs are covered in a hard shell how their bodies function * Aquatic molluscs: use gills to absorb oxygen land molluscs: have a simple respiratory cavity three types of molluscs *gastropods: snails and slugs *bivalves: mussel, clam, and oysters *cephalopods: octopus, squid, cuttlefish Gastropod Bivalves Tentacles to move Cephalopods

Invertebrates: Arthropods * crustaceans: crabs, prawns, barnacles - have got ten legs * myriapoda: centipedes and millipedes - they have numerous legs * insects: bees, beetles, butterflies - they have six legs and many have wings Physical appearance * have got an exoskeleton * Have a head, a segmented body, and several pairs of legs how their bodies function * Aquatic arthropods use gills to breathe * land arthropods have got tiny tubes types * arachnids: spiders, scorpions, ticks - have got eight legs

questions Do arthropods have a skeleton or exoskeleton? What are the two ways that arthropods breathe? What are the four types of arthropods? Examples? What are the main characteristics of insects? questions What is the main difference between vertebrates and invertebrates? What are the three groups of molluscs? Examples? Where do molluscs live? Aquatic arthropods have gills and land arthropods have tiny tubes. Vertebrates have an internal skeleton and a spinal column. Arachnids: spiders, scorpions, and ticks. Crustaceans: crabs, prawns, barnacles. Myriapoda: centipedes and millipedes. Insects: bees, beetles, butterflies Gastropods: snails, bivalves: mussels, and cephalopods: squid There are aquatic molluscs and land molluscs. They have six legs and many have wings