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Nat Sel 22-23

Adaptations and Natural Selection

Dichotomous Key A tool used to determine the identity of things in the natural world.
Couplets A pair of contradictory statements where one statement is accepted and the other rejected.
Organism An individual animal, plant or single-celled life form.
Kingdom One of six groups of organisms that share similar characteristics with other that are also in that group.
Eubacteria True bacteria, prokaryotic, unicellular, autotrophs and heterotroph, spherical or rod-shaped, and found in soil, rocks, oceans, snow and living organisms.
Achaeabacteria Differs from other bacteria, prokaryotic, unicellular, autotroph and heterotroph , and found in extreme environments such as hydrothermal vents.
Protista Cannot be classified as animal, plant or fungus, eukaryotes, most are unicellular, and autotroph and heterotroph; Ex: slime mold (A), protozoa (B), primitive algae (C)
Fungi Multicellular, eukaryotes, all heterotrophs – consumers; Ex: yeast (A), mushrooms (B), ringworm (C).
Plantae Multicellular, eukaryotes, most live on land, autotrophs – (producer, makes its own food), provides food for heterotrophs.
Animalia Multicellular, eukaryotes, live everywhere, heterotrophs - consumers.
Natural Selection The process whereby organisms better adapted to their environment tend to survive and produce more offspring over long periods of time.
Selective Breeding The process by which humans choose a plant of animal to breed based on specific traits by choosing which plants or animals will sexually reproduce to create the desired offspring.
Environment The surrounding or conditions in which a person, animal, or plant lives.
Genetic Traits Characteristics that are passed on to offspring (inherited) from parents.
Genetically Modified Organism (GMOs) Organisms engineered to contain foreign DNA that the organism could not obtain in traditional breeding which is usually done to introduce a beneficial trait.
Adaptation A body part, feature, or behavior that helps a living thing survive and function better in in its environment that is developed through natural selection.
Charles Darwin Naturalist who is famous for his work on natural selection and did 5 years doing research on his ship the HMS Beagle. Born in England (1809-1882) and wrote "On the Origin of Species."
structure a section of what an animal or plant is made of. This is part of its physical form.
function what the structure does, a special task.
behavior part of a living organism's activity. Some functions, like running, are also behaviors.
Species a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.
Variation differences among organisms of the same species (i.e. hair color, eye color, face shape, etc..)
External Structure a part of an organism on the outside of the body that helps the organism survive. (i.e. fins on fish or beaks on birds)
Internal Structure a part of an organism on the inside of the body that helps the organism survive. (i.e. lungs, bones, etc.)
Created by: LMS 7 Sci
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