Module 12

3. Cells that have not specialized in any particular function
4. A growth response to gravity
6. A plant that loses its leaves for winter
9. A growth response to light
11. A plant's response to a stimulus such that the direction of the response is preprogrammed and not dependent on the direction of the stimulus
12. The process of cutting away a ring of inner and outer bark all the way around a tree trunk
13. Chemicals that circulate throughout multicellular organisms, regulating cellular processes by interacting with specifically targeted cells
14. The study of life in an organism
15. An environmental change that triggers a response

1. The parts of a plant that are not involved in reproduction
2. A growth response to touch
5. Spaces in the soil that determine how much water and air the soil can hold
7. The process by which organic substances move through the phloem of a plant
8. The parts of a plant involved in reproduction
9. Living vascular tissue that carries sugar and organic substances throughout a plant
10. Nonliving vascular tissue that carries water and dissolved minerals from the roots of a plant to its leaves
16. A mixture of gravel, sand, silt,clay,and organic matter