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Living Organisms

5th Grade Science Vocabulary

TermDefinition
traits quality or characteristic of a living thing (eye color, height)
acquired traits a trait that a living thing gets during its lifetime (scar)
instinct an inherited behavioral trait such as walking for people and hibernating for bears (fish know how to swim by instinct)
heredity the process by which traits are transferred from parent to offspring
DNA the material that carries all the information about how a living thing will look and function
inherited traits a characteristic that a living thing gets from its parents (blue eyed children inherit eye color)
offspring the young of a person, animal, or plant (a cow's offspring is a calf)
cell the basic unit of life
unicellular a living organism composed on one cell (amoeba, paramecium)
multi-cellular a living organism composed of many specialized cells (hydra, insect, human, animal)
tissue a group of similar cells that work together (muscle cells, skin cells)
organ part of a system that consists of cells and tissue that is specialized to perform a specific task (heart, brain, lungs)
nervous system the body system that sends and receives messages through the body (brain, spinal cord, nerves)
circulatory system the body system that moves oxygen, food, and waste throughout the body (also called the cardiovascular system)
respiratory system the body system that brings oxygen in and takes carbon dioxide out (lungs)
digestive system the body system that breaks down food to be used as energy
skeletal system the body system that provides support and structure through the bones (bones)
muscular system the body system that works with the bones to allow movement
involuntary muscle muscles that work automatically (cardiac muscle, stomach muscle)
voluntary muscle muscle that allows YOU to control movement (skeletal muscle)
Created by: afitz23