Chapter 07 – Leaves
Chapter 07
Leaves
Multiple Choice Questions
1. Typical leaves function as _______________ in the plant.
2. Plants whose leaves fall off at the end of the growing season are
Chapter 07 – Leaves
3. A cluster of leaflets attached to the end of the petiole would be characteristic of a
4. A leaf that lacks a petiole is termed
5. All leaves originate as
Chapter 07 – Leaves
6. The plant part that facilitates a leaf blade being oriented at right angles to the sun is a/an
7. Which of the following is a function of a stoma?
Chapter 07 – Leaves
8. Which of the following is primarily responsible for forcing water out of hydathodes?
9. A __________ leaf has a single expanse of blade tissue.
10. The arrangement of leaves on a stem is referred to as __________________.
Chapter 07 – Leaves
11. Bracts are
12. A leaf arrangement in which there are three or more leaves at a node is called
13. A leaf arrangement in which there are two leaves at a node is called _________.
Chapter 07 – Leaves
14. Which statement about venation is INCORRECT?
15. Which of the following do guard cells and palisade mesophyll cells have in common?
Chapter 07 – Leaves
16. Leaf veins are located in which of the following?
17. The venation that forks repeatedly in leaves is termed
Chapter 07 – Leaves
18. The jacket of cells surrounding a leaf vein is usually termed a/an
19. The epidermis of leaves normally is coated with
20. In a leaf such as a sunflower, the average number of stomates on the lower surface is
approximately ___________.
Chapter 07 – Leaves
21. The opening and closing of stomata is governed by ______ levels in the guard cells.
22. Another name for mesophyll cells is
Chapter 07 – Leaves
23. The large cells of certain grass leaves that permit the leaves to roll up under dry conditions
are
24. In most leaves the number of stomata per square centimeter of surface is
Chapter 07 – Leaves
25. Because of the greater light intensity and heat absorption on the upper surface of the leaf,
the upper surface has
26. The spongy mesophyll is so named because it
Chapter 07 – Leaves
27. Xylem and phloem in a leaf are part of the
28. Sugars produced in photosynthesis are “loaded” into the ______ of the leaf for transport
throughout the plant.
Chapter 07 – Leaves
29. A conspicuous organelle at the light microscope level in cells of the palisade mesophyll
would be
30. Stomata are part of this tissue.
Chapter 07 – Leaves
31. Which leaf cells often resemble jigsaw puzzle pieces when viewed from the top?
32. Leaf venation patterns in _____________ leaves are usually netlike or reticulate.