Plant Review Answers

1. green algae
2. prevent H2O (water) loss, getting needed materials (water & minerals), and reproduction
3. cuticle
4. vascular tissue
5. xylem
6. phloem
7. alternation of generations
8. gametophyte
9. lack support of vascular tissue & have to transport material using osmosis/diffusion
10. water
11. gymnosperms
12. # of cotleydons, root, stem, leaves, floral parts
13. primary: length; secondary: width
14. stomata
15. guard cells
16. pollen
17. coat, embryo, endosperm (food)
18. seed leaf, can be used to store food
19. p- transfer of pollen; f- union of egg/sperm
20. wind, water, animals
21. the ovary changes into a fruit
22. dormancy
23. phototropism
24. thigmotropism
25. geo- or gravitropism
26. auxin
27. ethylene