Plant
Diversity II: answers
1) sporangia
2) The flower is composed of gametophyte
tissue only.
3) reduction of the
gametophyte phase of the life cycle
4)
mitochondria.
5) their gametophytes
are protected by, and obtain nutrition from, the sporophytes.
6) a choice of
germination location.
7) a haploid
gametophyte retained within tissues of the diploid sporophyte
,pollen
8) pollen grain
9) 3, 1, 4, 2
10) cotyledon.
11) anther and
filament.
12) within
an ovule contained within an ovary of a flower
13) a mature ovary.
14)megaspore-2n
15)
alternation of generations
16)
parallel leaf venation
17) ovaries.
18) male gametophyte ---sporopollenin
19) fern gametophyte that will bear only
antheridia.
20) integument(s)
21) have pollen.
22) windblown seeds.
23) soils.
24)
Female gametophytes use meiosis to produce eggs.
25)
Pollen grains are very different from pine male gametophytes.
26) 4, 2, 3, 1
27) 1, 4, 3, 2, 5
28) A
mature fruit is a short stem with spore-bearing appendages.
29) both male and
female gametophytes
30)
1, 2, and 3
31) ovule
32) spores.
33) They are modified leaves.
34) integuments; sporopollenin
35)D
36)d
37) b
38) d
39) a
40) cycads (Cycadophyta
41) free-living gametophytes.
42) pollen tubes.
43) They
are currently thought to be polyphyletic.
44) modified sporophylls.
45) are structures that directly produce female gametes.
46) detritivorous
(scavenging) animal
47) by facilitating dispersal of seeds
48) spore mother cells.
49) 4, 1,
2, 5, 3
50) two sperm nuclei /
the pollen tube
51) b
52) d?
53) b
54) b
55) c
56) have
two sperm nuclei, both of which unite with nuclei of the female gametophyte.
57) coordinate developmental timing between the embryo and its
food stores.
58) ovule
59) ovary
60) flagellated sperm.
61) sperm cells with flagella.
62) have brightly
colored reproductive parts.
63) microsporangium
64) inhibits herbivory.
65) possessing an abdomen
that is densely covered with short bristles
66) It
should be nutritious.
67) b
68) a.
69) c.
70) d shape.
71) e
72) artificial
selection
73) human population growth
74) People
in the tropics do not need to increase agricultural output.
75) observing which
plants are the most used food plants.
76) seed
77) micropyle.
78) haploid; meiosis