Chapter 07 – Leaves
33. Which of the following is NOT a specialized leaf?
34. Which of the following specialized leaves are found in plants living in arid
environments?
Chapter 07 – Leaves
35. Flower pot leaves provide __________________. In turn, adventitious roots harvest
minerals from the resulting accumulation of nutrient-rich material.
36. Which is a morphological adaptation to reduce water loss from the leaf?
Chapter 07 – Leaves
37. Which of the following is known to be modified as a tendril?
38. Which of the following is a typical characteristic of a shade leaf (as opposed to a leaf of
the same plant that is fully exposed to the sun)?
39. In spines most of the normal leaf tissue is replaced with
40. Which of the following insect-trapping leaves do NOT have active traps?
Chapter 07 – Leaves
41. Modified leaves are used by insectivorous plants to trap insects. One such plant that has
movable modified leaves is
42. Which of the following leaf pigments is/are red if the cell sap is slightly acid and blue if
the cell sap is slightly alkaline?
Chapter 07 – Leaves
43. The leaf pigments mostly responsible for gold to orange leaf colors in the fall are
44. In the abscission zone of the leaf, which of the following is closest to the stem?
Chapter 07 – Leaves
45. Which of the following may cause pectins in the middle lamella of cells of the separation
layer to break down in the fall?
46. Which of the following drugs is NOT obtained from leaves?
47. Which of the following beverages is manufactured or brewed from leaves?
Chapter 07 – Leaves
48. Which of these plants produce leaves with chemicals that affect the behavior and/or mood
of people?
49. In an energy-conscious world, people may plant more trees around their homes because
______________.
50. Leaves of ______________ provide fibers for production of cordage, ropes, and other
textiles.
Chapter 07 – Leaves
True / False Questions
51. Monocots generally have net-veined leaves.
52. Leaf mesophyll consists primarily of chlorenchyma tissue.
53. If you were looking for bundle sheath cells in a leaf, you would usually find them forming
a layer next to the upper epidermis.
Chapter 07 – Leaves
54. Stomata open when the water content of the guard cells increases.
55. Bracts function as little windows that admit light to the interior of the leaf.
56. All healthy leaves of insectivorous plants actively trap insects and other small organisms.
Chapter 07 – Leaves
57. Insectivorous plants trap and digest insects and other small organisms to get nitrogen
which is lacking in the soils of their environments.
58. The protective layer of an abscission zone serves to prevent water loss after the leaf falls
off the plant.
59. Anthocyanins are the principal pigments responsible for yellow and orange colors in fall
leaves.
Chapter 07 – Leaves
60. Most natural ropes and twines are made from leaf fibers.
61. Pinnately compound leaves have leaflets in pairs along a rachis.
62. Most photosynthesis in a leaf takes place in the spongy mesophyll.
63. Betacyanins are pigments that are usually red.
Chapter 07 – Leaves
64. Few, if any, drugs are obtained from leaves.
65. All leaves originate as primordia on the surface of the stem apical meristem.