Chapter 4 – Living Things

Term Definition
Sequence the order in which events take place. Clue words "first, next, then, and finally."
Classifying Animals Animals are classified into groups with the same trait like according to their behaviors (how they act/what they eat) or their physical characteristics (such as hair/how they look) or where they live or how they give birth
Trait a feature passed on to a living thing from its parents. Traits can include an animals's behavior or it physical characteristics.
Vertebrate one main characteristics scientists use to classify animals is whether or not they have a backbone. animals with a backbone are called vertebrates. Example :cat, bird, fish They all have bones that grow.
Differentiate how are two groups different
Groups of Vertebrates Fish, Amphibians, Reptiles, Birds, Mammals
Fish vertebrates that live in water. Slippery scales, breathe through gills and lay eggs. Cold blooded vertebrates
Amphibians cold blooded vertebrates with smooth, moist skin. They hatch from eggs. Frogs, toads and salamanders are amphibians. Most young amphibians live in water (like tadpoles.)They get oxygen from gills and skin.Most develop lungs to breathe air out of water.
Reptiles snakes, lizards, turtles and crocodiles are reptiles. Reptiles are cold-blooded vertebrates. They have dry, scaly skin. They breathe air through lungs. Most reptiles lay eggs.
Birds warm-blooded vertebrates with feathers and bills. Feathers help birds stay warm. Wings and light bones help most birds fly. They breathe air through lungs. All birds hatch from eggs.
Mammals warm-blooded vertebrates. They usually have hair that keeps them warm. Mammals breather air through lungs and feed ilk to their young. Most mammals are born alive instead of hatching from eggs.
invertebrates animals without backbones-sea stars, butterflies and spiders.They have structures other than bones to give them their shape like a soft sac filled with liquid supports worms and sea jellies or a hard shell supports clams.Most are smaller than vertebrates.
Groups of Invertebrates Sea jellies, worms, mollusks, arthropods
Sea Jellies have soft bodies and long, stinging body parts, their body is mostly water, stuns its prey, lives in ocean.
Worms animals with long, soft bodies and no legs. They keep the soil healthy.
Mollusks soft bodies like octopuses, squids, clams and snails. Hard shells and eyes
Arthropods largest group of invertebrates. hard covering outside its body. body has more than one main part and their legs have joints, like insects, spiders and crabs.
Animal birth a way scientists classify animals, eggs or live birth
Eggs way some animals give birth, like fish, amphibians and reptiles. Some grow for a few months.
Live Birth way some animals give birth, like lions
Inherit means to receive from a parent. An inherited characteristic is also called a trait- passed on from parents to offspring. Animals inherit traits such as color and shape of their body parts. Plants inherit traits such as leaf shape and flower color.
Acquired characteristics characteristics that you are not born with (example – a woman with pierced ears.) Plants and animals develop acquired characteristics through interactions with their environment – like a plant having brown leaves.
Instinct inherited behaviors (behaviors that animals are born to do – like a baby bird opening its mouth when a parent brings food.) Some animals have an instinct to move when the seasons change (like birds.)
Migrate when animals have an instinct to move
Inherited behaviors a behavior an animal is born to do
learned behaviors behaviors that are learned, not instinctive, example chimpanzees using a tool – they learned by watching.
small difference in traits… can help an animal-like having the same color fur as enviroment.animals can have different traits than parents. differences can harm animals-can make it hard to survive & the example of light brown mice having a black hair mouse baby.
offspring the babies of animals
Life cycle egg to baby to adult to death
Life cycle of a butterfly egg, larva, pupa, adult
Larva second stage in the life cycle of some insects, including butterflies. Called a caterpillar. It hatches from the egg and sheds its skin several times as it grows.
Pupa stage in an insect's life cycle between larva and adult. a butterfly pupa is protected inside a hard covering called a chrysalis. There inside the chrysalis it grows wings and long legs.
Adult butterfly comes out of the chrysalis looks nothing like the larva that went in. It has wings, long legs and antennae. After laying eggs, the adult butterfly will die.
Metamorphosis change in form during an animal's life cycle, many insects and frogs do. (like eggs, tadpole, growing tadpole and adult frog.)
habitat place where a plant or animal lives.
Life cycle of a mammal (like a bobcat) egg (inside mother's body), kitten, growth, adult. Some animals go through life cycle quickly, some live a long time.