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1. Which of the following is not a characteristic that distinguishes gymnosperms and
angiosperms from other plants?
alternation of generations
ovules
integuments
pollen
dependent gametophytes
2. Match the correct derived character listed below with branch point 7 in the diagram:
flowers
embryos
seeds
vascular tissue
3. Match the correct derived character listed below with branch point 8 in the diagram…
4. Match the correct derived character listed below with branch point 9 in the diagram…
5. Match the correct derived character listed below with branch point 10 in the diagram…
6. Which of these is a male gametophyte? (Figure 2)
7. In pines, an embryo is a(n) _____.
seed
immature sporophyte
food reserve for the immature sporophyte
immature male gametophyte
immature female gametophyte
8. Which of these statements is true about the gametophyte tissue that surrounds the pine
embryo?
It functions as a haploid food reserve.
It functions as a diploid food reserve.
It functions as a triploid food reserve.
It develops from the fusion of a microspore and a megaspore.
It is the remnant of the pollen tube.
9. In the pine, microsporangia form _____ microspores by _____.
triploid ... fertilization
diploid ... mitosis
diploid ... meiosis
haploid ... mitosis
haploid ... meiosis
10. Which one of the following is true of seed plants, but not true of seedless plants?
The sporophyte is dependent on the gametophyte.
The sporophyte is large, and the gametophyte is small and independent.
The gametophyte is reduced and dependent on the sporophyte.
The spore is the main means of dispersing the offspring.
A film of water is necessary for sperm to come in contact with eggs.
11. Which characteristic below is not unique to seed plants?
ovules
pollen
spores
seed coat
12. The diploid generation of the plant life cycle always _____.
produces spores
is called the gametophyte
is larger and more conspicuous than the haploid stage
develops from a spore
produces eggs and sperm
13. The eggs of seed plants are fertilized within ovules, and the ovules then develop into
_____.
seeds
spores
gametophytes
14. The cells within pollen grains are _____ and together comprise the _____.
diploid ... spores
diploid ... sperm nuclei
haploid ... spores
haploid ... male gametophyte
diploid ... a new sporophyte
15. Seeds have advantages over spores. For example, _____.
seeds contain embryonic plants, an abundant food supply, and a protective covering
seeds can survive for extended periods of time at reduced metabolic rates
seeds are single cells, demanding fewer nutrients from the parent plants
seeds can survive even in conditions that are unfavorable for the parent plants
16. What is located in the scalelike structures packed densely in pollen cones?
sporophytes
sporangia
developing seedlings
megasporocytes
developing pollen tubes
Answers:
1. alternation of generations
2. embryos
3. vascular tissue
4. seeds
5. flowers
6. E (those are pollen grain; A is the seed, B, C and D are all parts of the seed)
7. immature sporophyte
8. haploid food reserve
9. haploid…meiosis
10. The gametophyte is reduced and dependent on the sporophyte.
11. spores
12. produces spores
13. seeds
14. haploid…male gametophyte
15. seeds contain embryonic plants, a food supply and a protective covering
16. sporangia