Exam 29: Plant Diversity I: How Plants Colonized Land

The following question refers to the generalized life cycle for land plants shown in the figure. Each number within a circle or square represents a specific plant or plant part, and each number over an arrow represents meiosis, mitosis, or fertilization. Which number represents a megaspore mother cell in the figure?

Which of the following features of how seedless land plants get sperm to egg are the same as for some of their algal ancestors?

The following question refers to the generalized life cycle for land plants shown in the figure. Each number within a circle or square represents a specific plant or plant part, and each number over an arrow represents meiosis, mitosis, or fertilization. In the figure, meiosis is most likely to be represented by which number(s)?

If you were asked to design a bryophyte that could be successful in a bare, moist area, which of the following possible adaptations would you include?

Liverworts, hornworts, and mosses are grouped together as bryophytes. Besides not having vascular tissue, what do they all have in common?

Which set contains the most closely related terms?

The following question refers to the generalized life cycle for land plants shown in the figure. Each number within a circle or square represents a specific plant or plant part, and each number over an arrow represents meiosis, mitosis, or fertilization. In the figure, the process labeled "6" involves ________.

In general, liverworts have a cuticle and pores. However, some species do not have pores. What would you predict concerning the cuticle of these species and why?

Increasing the number of stomata per unit surface area of a leaf when atmospheric carbon dioxide levels decline is most analogous to a human ________.

Which of the following statements is accurate with regard to the life cycle of mosses?

Breeuwer et al. (2008)measured the effect of different temperature regimes on the growth of different Sphagnum species. The growth of S. fuscum at four temperatures is shown. Use the information in the graph to answer the following question. What would you expect to happen to the geographic range of S. fuscum as the temperature of Earth warms?

Assuming that they all belong to the same plant, which of the following lists structures from largest to smallest (or from most inclusive to least inclusive)?

Grades, as opposed to clades, ________.

Use the following information to answer the question. Big Bend National Park in Texas is mostly Chihuahuan desert, where rainfall averages about 25 centimeters per year. Yet, it is not uncommon when hiking in this extremely arid zone to encounter mosses and ferns. One such plant is called "flower of stone." It is not a flowering plant, nor does it produce seeds. Under arid conditions, its leaflike structures curl up. However, when it rains, it unfurls its leaves, which form a bright green rosette on the desert floor. Consequently, it is sometimes called the "resurrection plant." At first glance, it could be a fern, a true moss, or a spike moss. In which combination of locations would one who is searching for the gametophytes of "flower of stone" have the best chance of finding them?

Which of the following statements about the zygotes of plants is most likely to be accurate?

Suppose an efficient conducting system evolved in a moss that could transport water and other materials as high as a tall tree. Which of the following statements about "trees" of such a species would not be true?

Which of the following is an accurate statement about plant reproduction?

Use the following information to answer the question. Big Bend National Park in Texas is mostly Chihuahuan desert, where rainfall averages about 25 centimeters per year. Yet, it is not uncommon when hiking in this extremely arid zone to encounter mosses and ferns. One such plant is called "flower of stone." It is not a flowering plant, nor does it produce seeds. Under arid conditions, its leaflike structures curl up. However, when it rains, it unfurls its leaves, which form a bright green rosette on the desert floor. Consequently, it is sometimes called the "resurrection plant." At first glance, it could be a fern, a true moss, or a spike moss. What feature of both true mosses and ferns makes it most surprising that they can survive for many generations in dry deserts?

Use the following information to answer the question. Big Bend National Park in Texas is mostly Chihuahuan desert, where rainfall averages about 25 centimeters per year. Yet, it is not uncommon when hiking in this extremely arid zone to encounter mosses and ferns. One such plant is called "flower of stone." It is not a flowering plant, nor does it produce seeds. Under arid conditions, its leaflike structures curl up. However, when it rains, it unfurls its leaves, which form a bright green rosette on the desert floor. Consequently, it is sometimes called the "resurrection plant." At first glance, it could be a fern, a true moss, or a spike moss. Upon closer inspection of the leaves of "flower of stone," one can observe tiny, cone-like structures. Each cone-like structure emits spores of two different sizes. Further investigation also reveals that the roots of "flower of stone" branch only at the growing tip of the root, forming a Y-shaped structure. Consequently, "flower of stone" should be expected to possess which other characteristics?

The haploid gametophytes of bryophytes are ________.