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Campbell Biology

Lisa A. Urry

Chapter 31

Fungi - all with Video Answers

Educators

Chapter Questions

01:05

Problem 1

All fungl are
(A) symbiotic.
(C) flagellated.
(B) heterotrophic.
(D) decomposers.

Aadit Sharma
Aadit Sharma
Numerade Educator
01:56

Problem 2

Which of the following cells or structures are associated with asexual reproduction in fungi?
(A) ascospores
(C) zygosporangia
(B) basidiospores
(D) conidiophores

Asma Venkitta
Asma Venkitta
Numerade Educator
01:11

Problem 3

The closest relatives of fungi are thought to be the
(A) animals.
(C) mosses.
(B) vascular plants.
(D) slime molds.

Dennis Howard
Dennis Howard
Numerade Educator
01:18

Problem 4

The most important adaptive advantage associated with the filamentous nature of fungal mycelia is
(A) the ability to form haustoria and parasitize other organisms.
(B) the potential to inhabit almost all terrestrial habitats.
(C) the increased chance of contact between mating types.
(D) an extensive surface area well suited for invasive growth and absorptive nutrition.

Grant Castaneda
Grant Castaneda
Numerade Educator
04:30

Problem 5

The grass Dichanthelium lanuginosum lives in hot soils and houses fungi of the genus Curvularia as endophytes. Researchers tested the impact of Curvularia on the heat tolerance of this grass. They grew plants without (E-) and with (E+) Curvularia endophytes at different temperatures and measured plant mass and the number of new shoots the plants produced. Draw a bar graph for plant mass versus temperature and interpret it.
$$
\begin{array}{|c|c|c|c|}
\hline \text { Soil Temp. } & \text { Curvularia + or }- & \text { Plant Mass (g) } & \text { No. of New Shoots } \\
\hline 30^{\circ} \mathrm{C} & \mathrm{E}- & 16.2 & 32 \\
\hline & \mathrm{E}+ & 22.8 & 60 \\
\hline 35^{\circ} \mathrm{C} & \mathrm{E}- & 21.7 & 43 \\
\hline & \mathrm{E}+ & 28.4 & 60 \\
\hline 40^{\circ} \mathrm{C} & \mathrm{E}- & 8.8 & 10 \\
\hline & \mathrm{E}+ & 22.2 & 37 \\
\hline 45^{\circ} \mathrm{C} & \mathrm{E}- & 0 & 0 \\
\hline & \mathrm{E}+ & 15.1 & 24 \\
\hline
\end{array}
$$

Priya Manhas
Priya Manhas
Numerade Educator
04:56

Problem 6

The fungus-alga svmbiosis that makes up a lichen is thought to have evolved multiple times independently in different fungal groups. However, lichens fall into three well-defined growth forms (see Figure 31.24 ). How could you test the following hypotheses? Hypothesis 1: Crustose, foliose, and fruticose lichens each represent a monophyletic group. Hypothesis 2: Each lichen growth form represents convergent evolution by diverse fungal groups.

Rikhil Makwana
Rikhil Makwana
Numerade Educator
04:05

Problem 7

As you read in this chapter, fungi have long formed symbiotic associations with plants and with algae. In a short essay ( $100-150$ words), describe how these two types of associations may lead to emergent properties in biological communities.

JC
John Cumberland
Numerade Educator
02:41

Problem 8

This wasp is the unfortunate victim of an entomopathogenic fungus (a parasitic fungus of insects). Write a paragraph describing what this image illustrates about the nutritional mode, body structure, and ecological role of the fungus.

Josee Pacheco
Josee Pacheco
Numerade Educator