Roots ch 5
review
1. Which
of the following is a specialized root?
2. The
perception of gravity by a root takes place in
3. Which
soil horizon is the most important agriculturally?
4. The
best soil for plant growth is
5. In
traversing the root to the central xylem vessels, the last living tissue that
water passes through before entering the xylem is the
6. Which
of the following is a part of the embryo of a seed?
7. Specialized
roots that permit plants growing in water to facilitate gas exchange are called
8. Which
of the following is/are absent in dicot roots?
9. Roots
that have fungi symbiotically associated with them are called
10. Cells
of the apical meristem
11. The
tissue adjacent to the endodermis toward the center of a root is the
12. Which
of the following cells is relatively thin-walled?
13. Which
of the following tissues is common in roots but not in stems?
14. Parts
of the pericycle and parenchyma between the arms of xylem and patches of phloem
in young roots of many dicots and conifers become
15. The
most abundant cell type in periderm is
16. When
trees undergo root grafting with one another, an unfortunate result can be
17. In
addition to anchoring a plant, roots usually function directly in which of the
following processes?
18. Root
hairs are prominent in the
19. The
perception of gravity by roots is aided by
20. Rhythmic
cell divisions in young roots often
21. Cells
of an endodermis that do not have Casparian strips are
22. The
tissue in which a cork cambium first develops in woody dicot roots is the
23. Buds
that develop on roots are referred to as
24.The rootlike projections of parasitic plants
that develop along their stems and penetrate the host plants' tissues are
called
25. Which
of the following spices or flavorings is obtained from roots?
26. Root
hairs are found in the region of the root called the
27. This
tissue (region) is present in monocot roots but absent in dicot roots.
28. Which
of the following is a root with a specialized function?
29. This
can be found as part of the embryo.
30. Directly
inside the endodermis toward the center of a root is the
31. Roots
differ from stems in
32. One
unique function of the root cap is
33. Root
hairs
34. Numerous starch grains can be found in
this tissue of the root.
35. A
unique feature of the pericycle is
36. Mycorrhizae
are roots that are associated with
37. A
root system may function in which of the following?
38. Water
that drains out of the pores in soils after a rain is called
39. Good
agricultural soils are granular soils with pore spaces that occupy which of the
following percentages of the total volume of the soil?
40. The
arrangement of soil particles into groups called aggregates refers to
41. What
does too much water do to the soil?
42. In
a soil profile, topsoil is called the
43. Soil
water between field capacity and the permanent wilting point is called
all are true
44. Pith
tissue is absent in dicot roots.
45. Soil
parent material extends down to bedrock.
46. Clay
particles have negative electric charges.
47. Liming
is used to counteract soil acidity.
48. When
a seed germinates, the part of the embryo that develops into the first root is
called a radicle.
49. Outer
cells of the root cap secrete mucilage.
50. Grasses
generally produce a fibrous root system.
51. Casparian
strips are composed primarily of suberin.
52. Natural grafting between roots of different trees of the same species is well known in the tropics.