Chapter 24—The Plant Kingdom: Gymnosperms Key
1. ____ consist of an embryonic plant, nutritive tissue, and a protective coat.
2. An adaptive advantage that seeds have over spores is that
3. Gymnosperms differ from angiosperms in that gymnosperms
4. Which of the following terms are NOT properly paired?
5. In gymnosperms
6. Gymnosperms
7. The gymnosperms
8. Which is NOT a gymnosperm?
9. Conifers
10. Which of the following statements concerning conifers is FALSE?
11. The pollen cone of pine contains two
12. The immature male gametophyte of pine is also called a(n)
13. In the pine life cycle, the surviving megaspore divides, forming
14. In the pine life cycle, the germinated pollen grain is the
15. The transfer of pollen from male cones to female cones is called
16. The generative cell is located in the
17. When the ____ cell divides, the daughter cells are a body cell and a stalk cell.
18. When the ____ cell divides, the daughter cells are sperm.
19. In the pine life cycle
20. A developing embryo in pines
21. Pollen grains in conifers
22. The seeds of pines
23. In pine, the nutritive tissue is
24. Which of the following statements concerning the pine life cycle is FALSE?
25. In pine, pollen is carried to the female cone by
26. Which of the following statements concerning yews is FALSE?
27. Some conifers
28. Cycads
29. Cycads
30. ____ are gymnosperms that superficially resemble palms or tree ferns.
31. Ginkgo
32. Which of the following statements concerning ginkgoes is FALSE?
33. Like cycads, ginkgoes are
34. Gnetophytes
35. Members of the phylum ____ have vessel elements.
36. The ____ are a group of gymnosperms that are clearly more advanced than other gymnosperms because
they have vessel elements in their wood.
37. Who am I? I am a broad-leafed gnetophyte.
38. Who am I? I have a distinctive stem that forms two ribbon-like leaves.
39. Which of the following statements concerning progymnosperms is FALSE?
40. The ____ are an extinct group of plants that are thought to have evolved from progymnosperms.
41. The ____ probably gave rise to the cycads.
42. Conifers are
43. The most economically important gymnosperms belong to the phylum
44. Healthy coniferous forests
45. The most abundant timber tree in the southern coniferous forests is the
46. An adaptive advantage of seeds is that they are protected by a multicellular seed coat.
47. Seed plants are the dominant plants in most habitats today.
48. A seed consists of an embryo, a seed coat and a food supply.
49. The integument develops into the nutritive tissue of a seed.
50. Cycads evolved before conifers.
51. Although gymnosperms were common and diverse in the past, they are not very diverse today.
52. Resin may protect conifers from attack by fungi or insects.
53. Most conifers are evergreen.
54. The needles of conifers are megaphylls.
55. Pines produce microspores and megaspores in the same cones.
56. Conifers produce archegonia but not antheridia.
57. All conifers produce woody female cones.
58. Cycad sperm cells retain the primitive characteristic of being motile.
59. The evolutionary origin of gnetophytes is unclear.
60. Fossil progymnosperms show similarities to gymnosperms and appear to be ancestral to at least some
modern-day gymnosperms.
61. About 80% of our timber crop comes from conifers.
62. The multicellular embryo of gymnosperm sporophytes is protected within a(n) ____________________.
63. The term ____________________ is adapted from the Greek for “naked seed.”
64. The pollen tube grows through an opening in the integument called the ____________________.
65. Resin in conifers is collected in tubes called ____________________.
66. The narrow, tough leaves of conifers are called ____________________.