Question 1

Arrange the following from largest to smallest, assuming that they all come from the same fungus.
1) basidiocarp
2) basidium
3) basidiospore
4) mycelium
5) gill

Accepted Answer

A)   4 → 5 → 1→ 2 → 3
B)   5 → 1 → 4 → 2 → 3
C)   5 → 1 → 4 → 3 → 2
D)   5 → 1 → 3 → 2 → 4
E)   4 → 1 → 5 → 2 → 3

Question 2

If haustoria from the fungal partner were to appear within the photosynthetic partner of a lichen, and if the growth rate of the photosynthetic partner consequently slowed substantially, then this would support the claim that

Accepted Answer

A)   algae and cyanobacteria are autotrophic.
B)   lichens are not purely mutualistic relationships.
C)   algae require maximal contact with the fungal partner in order to grow at optimal rates.
D)   fungi get all of the nutrition they need via the "leakiness" of photosynthetic partners.
E)   soredia are asexual reproductive structures combining both the fungal and photosynthetic partners.

Question 3

Among sac fungi, which of these correctly distinguishes ascospores from conidia?

Accepted Answer

A)   Ascospores are diploid, whereas conidia are haploid.
B)   Ascospores are produced only by meiosis, whereas conidia are produced only by mitosis.
C)   Ascospores have undergone genetic recombination during their production, whereas conidia have not.
D)   Ascospores are larger, whereas conidia are smaller.
E)   Ascospores will germinate into haploid hyphae, whereas conidia will germinate into diploid hyphae. C

Question 4

Some fungi can exist either as unicellular yeasts or as filamentous hyphae. Which of these forms would be most favorable in an environment where nutrients are limited?

Accepted Answer

A)   a smaller unicellular yeast
B)   a larger unicellular yeast
C)   a shorter filamentous hypha
D)   a longer filamentous hypha

Question 5

Which of the following are protists, the organisms thought to share the closest ancestor with the chytrids?

Accepted Answer

A)   nucleariids
B)   choanoflagellates
C)   zygomycetes
D)   algae
E)   diplomonads

Question 6

Which process occurs in fungi and has the opposite effect on a cell's chromosome number than does meiosis I?

Accepted Answer

A)   mitosis
B)   plasmogamy
C)   crossing over
D)   binary fission
E)   karyogamy

Question 7

All fungi share which of the following characteristics?

Accepted Answer

A)   symbiotic
B)   heterotrophic
C)   flagellated
D)   pathogenic
E)   act as decomposers

Question 8

The multicellular condition of animals and fungi seems to have arisen

Accepted Answer

A)   due to common ancestry.
B)   by convergent evolution.
C)   by inheritance of acquired traits.
D)   by natural means, and is a homology.
E)   by serial endosymbioses.

Question 9

The following figure depicts the outline of a large fairy ring that has appeared overnight in an open meadow, as viewed from above. The fairy ring represents the furthest advance of this mycelium through the soil. Locations A-D are all 0.5 meters below the soil surface. Responses may be used once, more than once, or not at all.
 
-Which location is nearest to basidiocarps?

Accepted Answer

A)   A
B)   B
C)   C
D)   D

Question 10

Which of the following conditions is caused by a fungus that is accidentally consumed along with rye flour?

Accepted Answer

A)   ergotism
B)   athlete's foot
C)   ringworm
D)   candidiasis (Candida yeast infection) 
E)   coccidioidomycosis

Question 11

The lifestyle of microsporidians is most similar to that of

Accepted Answer

A)   scavengers.
B)   viruses.
C)   free-living yeasts.
D)   ectoparasites. B

Question 12

The vegetative (nutritionally active) bodies of most fungi are

Accepted Answer

A)   composed of hyphae.
B)   referred to as a mycelium.
C)   usually underground.
D)   Three of these responses are correct.
E)   Two of these responses are correct.

Question 13

Immediately after karyogamy occurs, which term applies?

Accepted Answer

A)   plasmogamy
B)   heterokaryotic
C)   dikaryotic
D)   diploid

Question 14

What makes it risky to rely on the presence of chitin in adult amphibian skin as the sole positive test for the presence of chytrids?

Accepted Answer

A)   Other mycoses may be in progress in the same amphibian simultaneously.
B)   The amphibian may harbor arthropod ectoparasites simultaneously.
C)   Bacterial infections may be simultaneously underway in the amphibian.
D)   Three of the responses above are correct.
E)   Two of the responses above are correct. E

Question 15

Asexual reproduction in yeasts occurs by budding. Due to unequal cytokinesis, the "bud" cell receives less cytoplasm than the parent cell. Which of the following should be true of the smaller cell until it reaches the size of the larger cell?

Accepted Answer

A)   It should produce fewer fermentation products per unit time.
B)   It should produce ribosomal RNA at a slower rate.
C)   It should be transcriptionally less active.
D)   It should have reduced motility.
E)   It should have a smaller nucleus.

Question 16

If infection primarily involves the outermost layers of adult amphibian skin, and if the chytrids use the skin as their sole source of nutrition, then which term best applies to the chytrids?

Accepted Answer

A)   anaerobic chemoautotroph
B)   aerobic chemoautotroph
C)   anaerobic chemoheterotroph
D)   aerobic chemoheterotroph

Question 17

In both lichens and mycorrhizae, what does the fungal partner provide to its photosynthetic partner?

Accepted Answer

A)   carbohydrates
B)   fixed nitrogen
C)   antibiotics
D)   water and minerals
E)   protection from harmful UV

Question 18

The photosynthetic symbiont of a lichen is often

Accepted Answer

A)   a moss.
B)   a green alga.
C)   a brown alga.
D)   an ascomycete.
E)   a small vascular plant.

Question 19

Both fungus-farming ants and their fungi can synthesize the same structural polysaccharide from the β-glucose. What is this polysaccharide?

Accepted Answer

A)   amylopectin
B)   chitin
C)   cellulose
D)   lignin
E)   glycogen

Question 20

Sexual reproduction has not been observed in Bd. A Bd sporangium initially contains a single, haploid cell. Which of the following processes must be involved in generating the multiple zoospores eventually produced by each sporangium?
1) S phase
2) cytokinesis
3) mitosis
4) meiosis

Accepted Answer

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

Exam 31: Fungi

Arrange the following from largest to smallest, assuming that they all come from the same fungus. 1) basidiocarp 2) basidium 3) basidiospore 4) mycelium 5) gill

Correct Answer
verified

If haustoria from the fungal partner were to appear within the photosynthetic partner of a lichen, and if the growth rate of the photosynthetic partner consequently slowed substantially, then this would support the claim that

Correct Answer
verified

Among sac fungi, which of these correctly distinguishes ascospores from conidia?

Correct Answer
verified
C

Some fungi can exist either as unicellular yeasts or as filamentous hyphae. Which of these forms would be most favorable in an environment where nutrients are limited?

Correct Answer
verified

Which of the following are protists, the organisms thought to share the closest ancestor with the chytrids?

Correct Answer
verified

Which process occurs in fungi and has the opposite effect on a cell's chromosome number than does meiosis I?

Correct Answer
verified

All fungi share which of the following characteristics?

Correct Answer
verified

The multicellular condition of animals and fungi seems to have arisen

Correct Answer
verified

Correct Answer
verified

Which of the following conditions is caused by a fungus that is accidentally consumed along with rye flour?

Correct Answer
verified

The lifestyle of microsporidians is most similar to that of

Correct Answer
verified
B

The vegetative (nutritionally active) bodies of most fungi are

Correct Answer
verified

Immediately after karyogamy occurs, which term applies?

Correct Answer
verified

What makes it risky to rely on the presence of chitin in adult amphibian skin as the sole positive test for the presence of chytrids?

Correct Answer
verified
E

Asexual reproduction in yeasts occurs by budding. Due to unequal cytokinesis, the "bud" cell receives less cytoplasm than the parent cell. Which of the following should be true of the smaller cell until it reaches the size of the larger cell?

Correct Answer
verified

If infection primarily involves the outermost layers of adult amphibian skin, and if the chytrids use the skin as their sole source of nutrition, then which term best applies to the chytrids?

Correct Answer
verified

In both lichens and mycorrhizae, what does the fungal partner provide to its photosynthetic partner?

Correct Answer
verified

The photosynthetic symbiont of a lichen is often

Correct Answer
verified

Both fungus-farming ants and their fungi can synthesize the same structural polysaccharide from the β-glucose. What is this polysaccharide?

Correct Answer
verified

Sexual reproduction has not been observed in Bd. A Bd sporangium initially contains a single, haploid cell. Which of the following processes must be involved in generating the multiple zoospores eventually produced by each sporangium? 1) S phase 2) cytokinesis 3) mitosis 4) meiosis

Correct Answer
verified

Exam 31: Fungi

Arrange the following from largest to smallest, assuming that they all come from the same fungus. 1) basidiocarp 2) basidium 3) basidiospore 4) mycelium 5) gill

Correct AnswerverifiedShow Answer

If haustoria from the fungal partner were to appear within the photosynthetic partner of a lichen, and if the growth rate of the photosynthetic partner consequently slowed substantially, then this would support the claim that

Correct AnswerverifiedShow Answer

Among sac fungi, which of these correctly distinguishes ascospores from conidia?

Correct AnswerverifiedC

Some fungi can exist either as unicellular yeasts or as filamentous hyphae. Which of these forms would be most favorable in an environment where nutrients are limited?

Correct AnswerverifiedShow Answer

Which of the following are protists, the organisms thought to share the closest ancestor with the chytrids?

Correct AnswerverifiedShow Answer

Which process occurs in fungi and has the opposite effect on a cell's chromosome number than does meiosis I?

Correct AnswerverifiedShow Answer

All fungi share which of the following characteristics?

Correct AnswerverifiedShow Answer

The multicellular condition of animals and fungi seems to have arisen

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following conditions is caused by a fungus that is accidentally consumed along with rye flour?

Correct AnswerverifiedShow Answer

The lifestyle of microsporidians is most similar to that of

Correct AnswerverifiedB

The vegetative (nutritionally active) bodies of most fungi are

Correct AnswerverifiedShow Answer

Immediately after karyogamy occurs, which term applies?

Correct AnswerverifiedShow Answer

What makes it risky to rely on the presence of chitin in adult amphibian skin as the sole positive test for the presence of chytrids?

Correct AnswerverifiedE

Asexual reproduction in yeasts occurs by budding. Due to unequal cytokinesis, the "bud" cell receives less cytoplasm than the parent cell. Which of the following should be true of the smaller cell until it reaches the size of the larger cell?

Correct AnswerverifiedShow Answer

If infection primarily involves the outermost layers of adult amphibian skin, and if the chytrids use the skin as their sole source of nutrition, then which term best applies to the chytrids?

Correct AnswerverifiedShow Answer

In both lichens and mycorrhizae, what does the fungal partner provide to its photosynthetic partner?

Correct AnswerverifiedShow Answer

The photosynthetic symbiont of a lichen is often

Correct AnswerverifiedShow Answer

Both fungus-farming ants and their fungi can synthesize the same structural polysaccharide from the β-glucose. What is this polysaccharide?

Correct AnswerverifiedShow Answer

Sexual reproduction has not been observed in Bd. A Bd sporangium initially contains a single, haploid cell. Which of the following processes must be involved in generating the multiple zoospores eventually produced by each sporangium? 1) S phase 2) cytokinesis 3) mitosis 4) meiosis

Correct AnswerverifiedShow Answer

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C

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B

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E

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