Across
- 3. organism that lives in or on an organism of another species
- 5. animal animal kept primarily for company
- 6. inherent inclination of a living organism towards a particular complex behavior
- 9. a chemical substance produced and released into the environment by an animal
- 11. substance that provides nutrients for growth
- 12. regulatory substance produced in an organism and transported in tissue fluids such as blood or sap to stimulate specific cells or tissue into action
Down
- 1. animal that eats plants and animals
- 2. portion of possible metabolic pathways operates at high rates
- 4. thing or event that evokes a specific reaction in an organ or tissue
- 7. animal that feeds on flesh
- 8. study of heredity and the variation of inherited characteristics
- 10. animal that feeds on plants