Biology Module #15

2. Chemicals that circulate throughout multicellular organisms, regulating cellular processes by interacting with specifically targeted cells
5. 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
8. A fertilization process that requires two sperm to fuse with two other cells
9. An ovule with a protective coating, encasing a mature plant embryo and a nutrient source
10. A mature ovary that contains a seed or seeds
13. A growth response to gravity
14. The phenomenon that occurs when individual molecules are so strongly attracted to each other that they tend to stay together, even when exposed to tension
16. Flowers with both stamens and carpels

1. Spaces in the soil that determine how much water and air the soil can hold
3. The study of life processes in an organism
4. Flowers with either stamens or carpels, but not both
6. A growth response to touch
7. The process by which organic substances move through the phloem of a plant
11. The transfer of pollen grains from the anther to the carpel in flowering plants
12. A growth response to light
15. A mixture of gravel, sand, silt, clay, and organic matter