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9.1 Vocabulary

TermDefinition
Cell a basic unit of structure and function in living things.
Tissue a group of similar cells that perform a specific function.
Organ a group of several different tissues.
Adaptation structures or behaviors that allow animals to perform these basic functions in their environments.
Sexual Reproduction the process by which a new organism develops from the joining of two sex cells-a male sperm and a female egg cell.
Fertilization the joining of an egg cell and a sperm cell.
Asexual Reproduction the process by which a single organism produces a new organism identical to itself.
Phylum biologists have classified animals into about 35 major groups.
Vertebrate animals with back bones are classified only one phylum.
Invertebrate animals without back bones.
Created by: S730537
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