Biology Vocabulary

2. External signals or cues that elicit a response in organisms.
5. The growth or movement of a plant in response to touch or contact.
8. The tissue in plants that transports water and dissolved minerals from the roots to other parts of the plant.
9. A reproductive structure in plants and some microorganisms that can develop into a new organism.
10. The system responsible for the exchange of gases (oxygen and carbon dioxide) between the body and the environment.
12. The process by which a seed begins to grow into a new plant.
13. The system responsible for breaking down food and absorbing nutrients.
14. The tissue in plants that transports sugars and other nutrients from the leaves to other parts of the plant.
15. The system responsible for removing metabolic wastes from the body.
16. The movement or growth of a plant in response to gravity.

1. The system that includes the skin, hair, and nails, protecting the body from the external environment.
3. The system that transports blood and nutrients throughout the body.
4. The system responsible for movement and locomotion in animals.
6. The growth or movement of a plant in response to light.
7. The process of eliminating waste materials from the body.
11. The system that provides support, protection, and structure to the body.