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| the animal kingdom, the division of life forms that includes all living and extinct animals. The animal kingdom includes the invertebrates and vertebrates |
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| the class for birds; warm-blooded vertebrate animals having two legs, wings, and feathers and that lay eggs |
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| Linnaeus's system of naming species, which used the Latin language. Each species has a name composed of two words: first, the genus that is written with the first letter capitalized, and second, the species that is written with a small first letter |
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| a phylum with four distinctive characteristics: embryonic notochord, which is usually replaced by the vertebra; a dorsal tubular nerve cord running down the back side; pharyngeal or throat area gillslits; and a rear area tail |
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| plant kingdom including the molds, yeasts, and fungi that obtain their food by absorption and that lack chlorophyll |
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| members of the animal kingdom without backbones, such as arthropods and worms |
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| vertebrates that possess mammary glands, have a body that is more or less covered with hair, and possess a well-developed brain |
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| the kingdom including the bacterial organisms that lack a true nucleus in the cell and reproduce by fission |
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| a flexible cord of cells in the embryo stage of growth that eventually becomes the vertebra |
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| the bony fish, a large group of vertebrate animals that live in the water and have permanent gills for breathing, fins, and a body covered with scales |
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| mammals having a placenta through which the embryo and fetus are nourished while in the uterus |
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| mammals having a placenta through which the embryo and fetus are nourished while in the uterus |
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| plant kingdom, including multi cellular photosynthesizing organisms, higher plants, and multi cellular algae |
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| kingdom including the single-celled or microscopic animals and single-celled algae |
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| the class that includes turtles, tortoises, terrapins, snakes, pythons, boas, iguanas, lizards, crocodiles, alligators, caiman, and gharials |
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| the seven categories of Linnaeus's classification system that include kingdom, phylum, class, order, family, genus, and species |
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| the science that is concerned with the naming and classification of organisms |
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| adds a third word to the binomial nomenclature for an organism that has a subspecies name |
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| animals that have a segmented spinal column |
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| diseases that can be transmitted from animals to humans; rabies is an example |
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| organism that lives on or within another organism and derives nourishment from the host |
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| a host that a parasitic organism lives on or in during an immature stage |
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