Exam 29: Plant Diversity I: How Plants Colonised Land

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?

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 these events, based on plant fossils, came last (most recently)?

The following question refers to the generalised 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 fertilisation. -In the figure, the process labelled "6" involves ________.

The structural integrity of bacteria is to peptidoglycan as the structural integrity of plant spores is to ________.

In the Great Australian Desert, rainfall averages about 30 centimetres 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?

How are bryophytes and seedless vascular plants alike?

Which of these are spore-producing structures?

Assuming that they all belong to the same plant, which of the following sequences describes structures from largest to smallest?

The following question refers to the generalised 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 fertilisation. -In the figure, which number represents an embryo?

In plants, which of the following are produced by meiosis?

Which taxon is essentially equivalent to the "embryophytes"?

What evidence do paleobotanists look for that indicates the movement of plants from water to land?

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. Based on the data shown, what additional conclusions can you draw?

In the Great Australian Desert, rainfall averages about 30 centimetres 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?

In the Great Australian Desert, rainfall averages about 30 centimetres 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, which of the following is the closest living relative of "flower of stone"?

Spores and seeds have basically the same function-dispersal-but are vastly different because spores ________.

Three of the following are evidence that charophytes are the closest algal relatives of plants. Select the exception.

In the Great Australian Desert, rainfall averages about 30 centimetres 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?

The evolution of a vascular system in plants allowed which of the following to occur?