Science Test 1

5. the pigment that gives a plant its green color
8. any growth response of a plant to a condition in its environment
12. the waxy substance that coats the leaf
14. an underwater plant with hollow, bladderlike leaves filled with water that are used to trap insects
15. the plant with hinged leaves that close shut like the jaws of a steel trap
18. the process in which an egg stored inside an ovule unites with a sperm cell from a grain of pollen
19. the part of the plant that grows below the ground
20. the sticky, glistening dew drops on this plant are the bait that attracts insects

1. the transfer of pollen from the stamen to the pistil
2. "packages" of chlorophyll found in leaf cells
3. the structures that allow stomata to open and close
4. a particularly deep main root
6. the bright colors and honey-scented nectar of this plant lure the insects that drown in its leaves
7. a colorful leaf surrounding certain flowers such as the dogwood and the poinsettia
9. an especially large vein running up the middle of many leaves
10. plants store sugar in their roots in the form of...
11. the chemical process by which a plant produces food
13. the tough, fibrous material used to form the cell walls of plants
16. the layer of thick, protective cells at the tip of the root
17. the pores on the underside of the leaf