Chapter 22 – Introduction to Seed Plants: Gymnosperms
31. Which of the following is common to both ginkgoes and pines?
32. Although most seed plant groups have nonmotile sperm, this group reproduces with
motile sperm.
Chapter 22 – Introduction to Seed Plants: Gymnosperms
33. Most gymnosperms are wind pollinated. The exception is the __________, where pollen
is transferred from microsporangiate strobili to megasporangiate strobili by beetles.
34. Joint firs (Ephedra), which superficially resemble horsetails,
Chapter 22 – Introduction to Seed Plants: Gymnosperms
35. Which of the following groups of gymnosperms have vessels in their wood?
36. Which of the following is NOT a gnetophyte?
37. Edible or otherwise useful gymnosperms do not include
Chapter 22 – Introduction to Seed Plants: Gymnosperms
38. Naval stores is a general term given to
39. Conifers (Division Coniferophyta) date back to the
40. Pine wood is said to be soft because of the absence of
Chapter 22 – Introduction to Seed Plants: Gymnosperms
41. Early explorers in North America found numbers of pines stripped of their bark by Native
Americans. The primary reason Native Americans did this was
42. Conifer resins are a source of which of the following?
43. Which of the following is favored for making archery bows and longbows?
Chapter 22 – Introduction to Seed Plants: Gymnosperms
44. The chief source of newsprint in North America is
True / False Questions
45. The sporophylls of pines are usually spirally arranged in strobili.
46. The oldest known living organisms are believed to be redwoods.
Chapter 22 – Introduction to Seed Plants: Gymnosperms
47. Fungi play an important role in the growth of pines.
48. The xylem of conifers generally contains no vessels or fibers.
49. Male pine cones commonly take four years to mature.
Chapter 22 – Introduction to Seed Plants: Gymnosperms
50. Pollen grains of pines are brought through the microphyle onto the nucellus as the fluid
from the micropyle evaporates.
51. The mature male gametophyte of a pine consists of a germinated pollen grain with a pair
of sperms in the pollen tube.
52. Some gymnosperms produce only a single seed in their female cones.
Chapter 22 – Introduction to Seed Plants: Gymnosperms
53. Resin consists of turpentine and rosin.
54. Most of the pulpwood for paper today comes from pines.
55. The seeds of ginkgoes have a fleshy covering and look plumlike.
56. Cycad leaves are fan-shaped and deciduous.
Chapter 22 – Introduction to Seed Plants: Gymnosperms
57. Welwitschia plants have trunks like palm trees.
58. Gnetophytes have vessels in their xylem.
59. Resins have a number of uses for human activities but are of no use to the plants that
produce the resins.
60. Ginkgo seeds, although foul-smelling, are edible.
Chapter 22 – Introduction to Seed Plants: Gymnosperms
61. Another term for the megasporangium is the nucellus.
62. Giant redwoods are easily damaged in forest fires because of their thin bark.
63. Eastern white pine and bald cypress trees provided so many useful products that their
populations were drastically reduced before the end of 19th century.
64. Gymnosperms generally have broad leathery leaves.
Chapter 22 – Introduction to Seed Plants: Gymnosperms
65. The Pacific Yew tree is a source of an anticancer drug called taxol.
66. Pines have vessels in the xylem, while all other gymnosperms have tracheids.
67. Bald cypress trees, like redwoods, are very resistant to decay.