Across
- 4. the state of continuing to live
- 6. a factor or condition that causes a response
- 7. the life process of becoming bigger and stronger
- 9. a reaction to some factor or condition
- 10. to make new, young individuals of the same type
- 12. a body part made up of related tissues that perform a specific function
- 14. the ways in which an organism acts
- 15. the set of cells, tissues, and organs in the eyes and brain that make vision possible. This is called the _____ system.
- 16. to stay alive
- 17. the smallest unit of life
Down
- 1. a plant’s growth or movement in response to a stimulus
- 2. the set of cells, tissues, and organs in the ears and brain that enable hearing is called the _____ system.
- 3. a group of similar cells joined together
- 4. the arrangement of parts that make up something
- 5. the way that something works to achieve a task or serve a purpose
- 8. to detect a stimulus
- 11. a group of organs that work together to carry out certain functions
- 13. a bundle of cells that send and receive messages between the brain and other body parts
