Chapter Questions
Figure 14.19 At what stage does the diploid zygote form?a. When the female cone begins to bud from the treeb. When the sperm nucleus and the egg nucleus fusec. When the seeds drop from the treed. When the pollen tube begins to grow
Figure 14.26 If a flower lacked a megasporangium, what type of gamete would it not be able to form? If it lacked a microsporangium, what type of gamete would not form?
The land plants are probably descendants of which of these groups?a. green algaeb. red algaec. brown algaed. angiosperms
The event that leads from the haploid stage to the diploid stage in alternation of generations is _______.a. meiosisb. mitosisc. fertilizationd. germination
Moss is an example of which type of plant?a. haplontic plantb. vascular plantc. diplontic plantd. seed plant
Why do mosses grow well in the Arctic tundra?a. They grow better at cold temperatures.b. They do not require moisture.c. They do not have true roots and can grow on hard surfaces.d. There are no herbivores in the tundra.
7. Which is the most diverse group of seedless vascular plants?a. the liverwortssb. the horsetailsc. the club mossesd. the ferns
Which group are vascular plants?a. liverwortsb. mossesc. hornwortsd. ferns
Which of the following traits characterizes gymnosperms?a. The plants carry exposed seeds on modified leaves.b. Reproductive structures are located in a flower.c. After fertilization, the ovary thickens and forms a fruit.d. The gametophyte is longest phase of the life cycle.
What adaptation do seed plants have in addition to the seed that is not found in seedless plants?a. gametophytesb. vascular tissuec. pollend. chlorophyll
Pollen grains develop in which structure?a. the antherb. the stigmac. the filamentd. the carpel
Corn develops from a seedling with a single cotyledon, displays parallel veins on its leaves, and produces monosulcate pollen. It is most likely:a. a gymnospermb. a monocotc. a eudicotd. a basal angiosperm
What adaptations do plants have that allow them to survive on land?
What are the three classes of bryophytes?
How did the development of a vascular system contribute to the increase in size of plants?
What are the four modern-day groups of gymnosperms?
Cycads are considered endangered species and their trade is severely restricted. Customs officials stop suspected smugglers, who claim that the plants in their possession are palm trees and not cycads. How would a botanist distinguish between the two types of plants?
What are the two structures that allow angiosperms to be the dominant form of plant life in most terrestrial ecosystems?