Question 1

Which trait(s) is (are) shared by many modern gymnosperms and angiosperms? 1. pollen transported by wind
2) lignified xylem
3) microscopic gametophytes
4) sterile sporophylls, modified to attract pollinators
5) endosperm

Accepted Answer

A)  1 only 
B)  1 and 3 
C)  1, 2, and 3 
D)  1, 3, and 5 
E)  2, 4, and 5

Question 2

Which of the following is a true statement about angiosperm carpels?

Accepted Answer

A)  Carpels are features of the gametophyte generation. 
B)  Carpels consist of anther and stamen. 
C)  Carpels are structures that directly produce male gametes. 
D)  Carpels surround and nourish the female gametophyte. 
E)  Carpels consist of highly modified microsporangia.

Question 3

The following questions refer to the generalized life cycle for land plants shown in Figure 26.1. Each number within a circle or square represents a specific plant or plant part, and each number over an arrow represents either meiosis, mitosis, or fertilization.
  Figure 26.1
-In Figure 26.1, the process labeled "6" involves

Accepted Answer

A)  nuclear fission. 
B)  mitosis. 
C)  meiosis. 
D)  fertilization. 
E)  binary fission.

Question 4

A botanist discovers a new species of land plant with a dominant sporophyte, chlorophylls a and b, and cell walls made of cellulose. In assigning this plant to a phylum, which of the following, if present, would be least useful?

Accepted Answer

A)  endosperm 
B)  seeds 
C)  sperm that lack flagella 
D)  flowers 
E)  spores

Question 5

Which of the following is a characteristic of all angiosperms?

Accepted Answer

A)  complete reliance on wind as the pollinating agent 
B)  double internal fertilization 
C)  free-living gametophytes 
D)  carpels that contain microsporangia 
E)  ovules that are not contained within ovaries

Question 6

If all of their nuclei are equally active transcriptionally, then the cells of dikaryotic fungi, in terms of the gene products they can make, are essentially

Accepted Answer

A)  haploid. 
B)  diploid. 
C)  alloploid. 
D)  completely homozygous. 
E)  completely hemizygous.

Question 7

The fact that infection by Bd causes lethargy in many infected amphibians can have what effect on efforts to accurately census the numbers of dead or dying amphibians at a particular time, in a particular habitat?

Accepted Answer

A)  It can cause underestimation, due to infected amphibians preferring to seek out refuges relative to uninfected amphibians. 
B)  It can cause underestimation, due to increased predation on, and removal of, infected amphibians relative to uninfected amphibians. 
C)  It can cause overestimation, because infected frogs should be more readily observable to human census-takers than should uninfected amphibians. 
D)  All three of the above statements are plausible. 
E)  Two of the above statements are plausible.

Question 8

A fruit is usually

Accepted Answer

A)  a mature ovary. 
B)  a thickened style. 
C)  an enlarged ovule. 
D)  a modified root. 
E)  a mature female gametophyte.

Question 9

Which of the following is a characteristic of hyphate fungi (fungi featuring hyphae)?

Accepted Answer

A)  They acquire their nutrients by phagocytosis. 
B)  Their body plan is a unicellular sphere. 
C)  Their cell walls consist mainly of cellulose microfibrils. 
D)  They are adapted for rapid directional growth to new food sources. 
E)  They reproduce asexually by a process known as budding.

Question 10

Reptilian embryos are protected from desiccation by a leathery shell. Similarly, which pair of structures protects seed plants' embryos and male gametophytes, respectively, from desiccation?

Accepted Answer

A)  ovules - waxy cuticle 
B)  ovaries - filaments 
C)  fruits - stamens 
D)  pollen grains - waxy cuticle 
E)  integuments - sporopollenin

Question 11

The adaptive advantage associated with the filamentous nature of fungal mycelia is primarily related to

Accepted Answer

A)  the ability to form haustoria and parasitize other organisms. 
B)  avoiding sexual reproduction until the environment changes. 
C)  the potential to inhabit almost all terrestrial habitats. 
D)  the increased probability of contact between different mating types. 
E)  an extensive surface area well suited for invasive growth and absorptive nutrition.

Question 12

Which of the following flower parts develops into a seed?

Accepted Answer

A)  ovule 
B)  ovary 
C)  fruit 
D)  stamen

Question 13

The following questions refer to the generalized life cycle for land plants shown in Figure 26.1. Each number within a circle or square represents a specific plant or plant part, and each number over an arrow represents either meiosis, mitosis, or fertilization.
  Figure 26.1
-In Figure 26.1, which number represents the mature gametophyte?

Accepted Answer

A)  1 
B)  3 
C)  5 
D)  7 
E)  11

Exam 26: The Colonization of Land by Plants and Fungi

Which trait(s) is (are) shared by many modern gymnosperms and angiosperms? 1. pollen transported by wind 2) lignified xylem 3) microscopic gametophytes 4) sterile sporophylls, modified to attract pollinators 5) endosperm