IBDP HL Plant Science

2. The movement of water and minerals through plants
3. The force of attraction between water molecules
6. Small pores in the leaves
8. Strengthens the walls of the xylem
9. Plants that can tolerate dry conditions
10. An acid and a hormone that causes the stomata to close when a plant wilts.
14. The embryonic root
16. Where the compounds are delivered to for use or storage
17. Response to gravity
20. Plant response to water
21. Seed coat
22. Embryonic shoot (also called the epicotyl)
23. A technique used to produce large numbers of identical plants (clones) from a selected stock plant
25. Influence cell growth rates by changing the pattern of gene expression
27. Show negative phototropism
28. Process by which water enters the roots
31. Outer covering which protects the flower when in bud
32. Plants that can tolerate salty conditions

1. Tapered xylem cells that exchange water solely via pits, leading to a slower rate of water transfer
4. Anther + filament
5. contains the food stores for the seed and forms the embryonic leaves
6. Where the organic compounds are synthesised
7. The force of attraction between water molecules and the walls of the xylem
11. A long day plant
12. Plants where Phloem and xylem vessels will be separated by the cambium (xylem on inside ; phloem on outside)
13. Used to measure the rate of transpiration
15. An example of a short day plant
18. Leaf pigments which are used by the plant to detect periods of light and darkness
19. Cells that help with the loading and unloading of the phloem
20. A factor that affects the rate of transpiration
23. Consists of undifferentiated cells that allow indeterminate growth
24. Transfer of pollen from the anther of one plant to the stigma of another
26. Refers to the small charges on a water molecule
29. A day neutral plant
30. Stigma + style + ovary