Leaf
Review
1. Which of the following do guard cells
and palisade mesophyll cells have in common?
2. Leaf veins are located in which of the
following?
3. When an abscission layer forms at the
base of a leaf petiole in the fall, which of the following tissues is the first
to become blocked?
4.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?
5. Which of the following is NOT a
specialized leaf?
6. A bundle sheath is a jacket of fibers
surrounding
7. The epidermis of leaves normally is
coated with
8. Bracts are
9. With which of the following specialized
leaves are ants commonly associated?
10. A
leaf arrangement in which there are three or more leaves at a node is called
11. Which
of the following is primarily responsible for forcing water out of hydathodes?
12. In
a leaf such as cotton, the average number of stomates
per square centimeter is approximately
13. The osmotic response of guard cells is
governed by ______ levels in the guard cells.
15. The
venation that forks repeatedly in leaves is termed
16. The
plant part that facilitates a leaf blade being oriented at right angles to the
sun is a/an
17. Another
name for mesophyll cells is
18. Which
of the following is a function of a stoma?
19. The
jacket of cells surrounding a leaf vein is usually termed a/an
20. The
large cells of certain grass leaves that permit the leaves to roll up under dry
conditions are
21. In most leaves the number of stomata per
square centimeter of surface is
22. All
leaves originate as
23. Which
of the following is known to be modified as a tendril?
24 Which
of the following is NOT a typical characteristic of a shade leaf (as opposed to
a leaf of the same plant that is fully exposed to the sun)?
25. In spines most of the normal leaf tissue
is replaced with
26. The
leaves that form a haven for ant nests are called
27. Which
of the following insect-trapping leaves do NOT have active traps?
28. The
leaf pigments mostly responsible for gold to orange leaf colors in the fall are
29. Which
leaf cells often resemble jigsaw puzzle pieces when viewed from the top?
30. In
the abscission zone of the leaf, which of the following is closest to the stem?
31. Which
of the following may cause pectins in the middle
lamella of cells of the separation layer to break down in the fall?
32. Which of the following drugs is NOT
obtained from leaves?
33. Which
of the following beverages is manufactured or brewed from leaves?
34. Leaflets attached to the end of the
petiole would be characteristic of a
35. A
leaf that lacks a petiole is termed
36. A
leaf that is covered with epidermal hairs is
37. The size and shape of a leaf is
controlled by
38. Plants whose leaves fall off at the end
of the growing season are
39. Because of the greater light intensity
and heat absorption on the upper surface of the leaf, the upper surface has
40. The spongy mesophyll
is so named because it
41. Chlorenchyma
would be found as part of the
42. Sugars produced in photosynthesis are
“loaded” into the ______ of the leaf.
43. Modified leaves are used by insectivorous
plants to trap insects. One such plant
that has movable modified leaves is
44. A conspicuous organelle at the light
microscope level in cells of the palisade mesophyll
would be
45. Stomata are
part of this tissue.