63. An ovary develops into a(n) ____________________.
64. A(n) ____________________ consists of an anther and a filament.
65. ____________________ mother cells are found in ovules.
66. A pollen sac is a(n) ____________________.
67. The ____________________ is an opening between the integuments through which the pollen tube grows.
68. Another name for the angiosperm female gametophyte is ____________________.
69. The nutritive tissue of most monocot seeds is ____________________.
70. Cells with three sets of chromosomes, such as most endosperm, are known as ____________________.
71. In double fertilization, one sperm fuses with the egg and the other sperm fuses with the
____________________.
72. In most eudicot seeds, the endosperm is used to nourish the developing embryo, which stores its food in its
____________________.
73. The typical angiosperm embryo sac has ____________________ nuclei at maturity.
74. The production of seeds without the fusion of gametes is called ____________________.
75. The study of fossil plants is called ____________________.
76. The study of the traditional uses of plants by indigenous peoples is called ____________________.
77. The study of plants which have economic importance is called ____________________.
78. The floral organs are thought to have evolved from ____________________.
79. Magnoliids, monocots, and eudicots comprise the ____________________.
80. ____________________ are pendulous clusters of tiny male flowers.
81. Figure 25-1
Refer to Figure 25-1. Which letter indicates a diploid cell?
a.
A
b.
B
c.
D
d.
E
e.
K
82. Figure 25-1
Refer to Figure 25-1. Which letter indicates a triploid cell?
a.
D
b.
F
c.
G
d.
H
e.
K
83. Figure 25-1
Refer to Figure 25-1. Which letter indicates a megaspore mother cell?
a.
A
b.
B
c.
D
d.
M
e.
N
84. Figure 25-1
Refer to Figure 25-1. Which letter indicates a seed?
a.
B
b.
I
c.
L
d.
M
e.
N
85. Figure 25-1
Refer to Figure 25-1. Which letter indicates an anther?
a.
B
b.
I
c.
J
d.
K
e.
L
86. Figure 25-1
Refer to Figure 25-1. Double fertilization involves sperm cells fusing with the structures labeled
a.
G and H
b.
A and K
c.
D and E
d.
B and F
e.
B and G
87. Figure 25-1
Refer to Figure 25-1. Which letter indicates an endosperm cell?
a.
D
b.
E
c.
F
d.
G
e.
H
88. Figure 25-1
Refer to Figure 25-1. A generative cell and a tube cell are found in the structure labeled
a.
A
b.
B
c.
I
d.
J
e.
K
89. Briefly describe the development of the male gametophyte in angiosperms, including the production of
sperm cells.
90. Briefly describe the development of the female gametophyte in angiosperms, including the production of
egg cell and polar nuclei.
91. Discuss three features of flowering plants that account for their success.
92. It takes only one pollen grain to initiate the development of an ovule into a seed, yet a single flower may
produce many thousands of pollen grains. Why are such huge numbers of pollen grains necessary?