Lesson II Animals

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A. Animals and Their Habitats

Habitat is a place where animals live. It is where their source of food is found. It is also called as Natural Home of AnimalsTypes:1. Mountains4. Polar Regions2. grassland5. Oceans, Seas, Pond, Lake, 3. forest Swamps, a. temperate forest6. Desertsb. tropical forest

B. HOW ANIMALS GET & EAT THEIR FOOD1. Animals have special body parts:1.1 flat teeth for grinding & chewing food ex: carabao, goat1.2 strong, sharp teeth for tearing / cutting meat into smaller piecesex: lion, tiger1.3 hands for grasping & holding food ex: monkey1.4 forepaws to hold the bones1.5 paws to tear the flesh of the preyex: lion, cat1.6 beak to pick up and crack seedsex: birds1.7 sharp claws called talons to get foodex: birds like eagle, hawk1.8 fangs for biting food & giving off poisonex: snake1.9 baleen to capture foodex: shark, whales1.10 pincers for holding foodex: crab1.11 biting mouth parts for sucking foodex: ant1.12 long tubes for sucking foodex: butterfly1.13 sticky, long tongue to catch insectsex: frog

Adaptation refers to animals special body structure that help them saty alive or survive in their environment1. Camouflage is a kind of disguise so that blending with the environment is possibleEx: grasshopper cannot be easily seen when it is on the grass because of its color2. Cryptic Coloration helps animal hide from their natural enemies. It is also called as Protective ColorationEx: cameleon (in the movie, Monsters Inc); Tree Frog

3. Mimicry animal resembles other objects in their surroundings in order to avoid predatorsEx: walking stick4. Chemical Defenses animals that give off or spray poison to protect themselvesEx: cobra, starfish5. Armor animals that have hard shells covering their bodyEx: clams, armadillos6. Other Strategies6.1 hiding in a soft place-ex: worms, crickets6.2 being active at nighttime, not daytime-ex: rabbits6.3 escaping by flight -ex: antelopes, octopus6.4 playing dead-ex: opossum6.5 giving up a body part -ex: lizards cutting off its tail6.6 fighting-ex: porcupines, bees, wasps

D. CLASSIFICATION OF ANIMALS Classification is a term used by scientists to group the animalsD.1 Classifying Animals According to What They Eat:1. Herbivores or Plant Eating Animals these are plant-eating animalsEx: cow, carabao, goats2. Carnivores or Meat-eating Animals animals that eat the meat / flesh of other animals Ex: lions, tiger, crocodile3. Omnivores or Plant and Meat-eating Animals are animals the eat both plants & animalsEx: human, cat, birds

D.2 Classifying Animals As to the Presence of Backbones1. Vertebrates are animals with backbonesEx: 1.1 Fishes covered with scales 1.2 Amphibians lay eggs on water; live on both land & waterEx: frog 1.3 Mammals give birth to their young; dont lay eggs; has Mammary GlandsEx: human 1.4 Reptiles covered with scales or platesEx: crocodile 1.5 Birds covered with feathersEx: hawk3. Invertebrates are animals without backbones

Phylum or GroupCommon NameDistinguishing Characteristics

PoriferaSpongesPore-bearing animals

CnidariaHydrasHollow intestined animals

PlatyhelminthesFlatworms, tapewormsFlattened, elongated, wormlike animals

AnnelidsEarthworms, LeechesAnimals with externally evident segmentation, ringed animals

MollusksSnails, clams, squidsSoft-bodied animals usually living in a shelter or exoskeletons

NematodesRoundwormsElogated, unsegmented wormlike animals, thread-like animals

ArthropodsInsects, crabs, spiders, centipedesSegmented animals with hardened outer skeleton

EchinodermsStarfish, sea urchinsSpiny-skinned animals