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9.1 Vocabulary
Term | Definition |
---|---|
Cell | the 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. |
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 cell and a female egg. |
Fertillization | 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 | major groups |
an animal with a backbone | |
Invertebrate | an animal without a backbone |