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Classification

These are all of the key terms for classification

TermDefinition
Abiotic Factors Nonliving parts of the environment, like water, rocks, and temperature.
Aristotle An ancient Greek philosopher who was one of the first to classify living things based on their similarities and differences.
Asexual Reproduction A type of reproduction where only one parent is needed, and the offspring are genetically identical to the parent.
Autotroph An organism that can make its own food, usually through photosynthesis, like plants.
Biodiversity The variety of different types of life found on Earth, including different plants, animals, and microorganisms.
Binomial Nomenclature A system of naming organisms using two names, the genus and species, like Homo sapiens for humans.
Biotic Factors Living parts of the environment, like plants, animals, and bacteria.
Carnivore An animal that eats only other animals.
Cell The basic unit of life, which makes up all living things.
Carolus Linnaeus A scientist who developed the system of binomial nomenclature and is known as the "father of modern taxonomy."
Cladogram A diagram that shows the relationships between different organisms based on their evolutionary history.
Consumer An organism that cannot make its own food and must eat other organisms to get energy.
Decomposer An organism, like bacteria or fungi, that breaks down dead plants and animals, returning nutrients to the soil.
Dichotomous Key A tool that helps identify organisms based on a series of choices between two characteristics.
DNA A molecule found in the cells of all living things that carries genetic information and determines traits.
Domain The highest level of classification in the hierarchy of life, above kingdom, grouping organisms based on major differences in their cell types.
Eukaryotic A type of cell that has a nucleus, which contains the cell's DNA; found in plants, animals, fungi, and protists.
Genus A group of similar species; the first part of an organism’s scientific name.
Herbivore An animal that eats only plants.
Heredity The passing of traits from parents to offspring.
Heterotroph An organism that cannot make its own food and must consume other organisms for energy.
Homeostasis The process by which living things maintain a stable internal environment, like keeping body temperature steady.
Kingdom A major category in biological classification that groups organisms with similar characteristics; there are six kingdoms, including animals, plants, and fungi.
Living Anything that has life, meaning it can grow, reproduce, respond to the environment, and carry out processes like metabolism.
Metabolism The set of chemical reactions that happen in the cells of living organisms to maintain life, including breaking down food for energy.
Multicellular Made up of many cells, like animals and plants.
Nonliving Anything that does not have life, meaning it does not grow, reproduce, or carry out metabolic processes, like rocks or water.
Omnivore An animal that eats both plants and animals.
Prokaryotic A type of cell that does not have a nucleus; found in bacteria and archaea.
Producer An organism that can make its own food from sunlight or chemicals, like plants and algae.
Sexual Reproduction A type of reproduction that involves two parents and produces offspring with a mix of traits from both parents.
Species The most specific level of classification, representing a group of organisms that can breed and produce fertile offspring.
Stimulus Anything in the environment that causes a reaction in an organism, like light, sound, or temperature changes.
Taxonomy The science of classifying and naming living things.
Unicellular Made up of only one cell, like bacteria.
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