Biology Chapter 29 - Fungi Flashcards
32 Questions
101 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

The cell walls of fungi are composed of?

chitin

Which unicellular fungus is probably in most kitchens?

yeast

Fungi that lack septa are called?

coenocytic

In a fungus, a complex multicellular reproductive structure is called a(n)?

<p>fruiting body</p> Signup and view all the answers

The structure labeled as 1 in the diagram is a?

<p>perforated septum</p> Signup and view all the answers

What is missing in the filament labeled as A?

<p>septa</p> Signup and view all the answers

A ____ is a tangled mass of hyphae.

<p>mycelium</p> Signup and view all the answers

Most fungal spores are ____ reproductive cells that are produced ____.

<p>nonmotile; sexually or asexually</p> Signup and view all the answers

Dikaryotic cells are denoted as _____ rather than _____ because there are two separate haploid nuclei.

<p>n + n; 2n</p> Signup and view all the answers

Which is an example of a member of phylum Zygomycota?

<p>black bread mold</p> Signup and view all the answers

When bread gets moldy with visible black or blue spots, you are looking at masses of the colored?

<p>spores</p> Signup and view all the answers

The sac fungi are characterized by sexual reproductive structures called?

<p>asci</p> Signup and view all the answers

Ascomycetes reproduce sexually by forming?

<p>ascospores</p> Signup and view all the answers

Production of ____ is a means of rapidly propagating new mycelia when environmental conditions are favorable for ascomycetes.

<p>conidia</p> Signup and view all the answers

Yeasts reproduce asexually by?

<p>budding</p> Signup and view all the answers

The club fungi typically reproduce by producing?

<p>basidia</p> Signup and view all the answers

Which process takes place within the young basidia on the gills of the mushroom?

<p>karyogamy</p> Signup and view all the answers

Mushrooms that we eat are technically referred to as?

<p>basidiocarps</p> Signup and view all the answers

Members of phylum ____ are the most primitive of the fungi and were previously classified as protists.

<p>Chytridiomycota</p> Signup and view all the answers

Phyla Ascomycota and Basidiomycota are considered ____ because they share a more recent common ancestor with each other than either does with any other group.

<p>sister taxa</p> Signup and view all the answers

The structure labeled as 4 in the diagram is a?

<p>zygote</p> Signup and view all the answers

Of the following, which would be predicted to grow at the slowest rate?

<p>lichens</p> Signup and view all the answers

How do mycorrhizae benefit plants?

<p>Mycorrhizae increase a plant's absorptive surface area of roots.</p> Signup and view all the answers

The fungus that causes black stem rust of wheat belongs to which fungal group?

<p>basidiomycetes</p> Signup and view all the answers

Consuming even a single mushroom of the genus ____ can be fatal.

<p>Amanita</p> Signup and view all the answers

Which genus is used to produce beer and wine?

<p>Saccharomyces</p> Signup and view all the answers

The cell walls of fungi are composed of cellulose.

<p>False</p> Signup and view all the answers

Conidia are asexual spores.

<p>True</p> Signup and view all the answers

Chytrids produce spores that lack a flagellum.

<p>False</p> Signup and view all the answers

Microsporidia are unicellular parasites of animals.

<p>True</p> Signup and view all the answers

In mushrooms, karyogamy occurs within the basidium.

<p>True</p> Signup and view all the answers

A lichen is a combination of a fungus and a(n) photoautotroph.

<p>True</p> Signup and view all the answers

Study Notes

Fungi Structure and Composition

  • Fungi have cell walls composed of chitin, unlike plants which have cellulose.
  • Coenocytic fungi lack septa, resulting in a continuous cytoplasmic mass.
  • Mycelium refers to a tangled mass of hyphae that forms the body of the fungus.

Reproductive Structures and Processes

  • The fruiting body is a complex multicellular reproductive structure in fungi.
  • Basidiocarps are the mushrooms that are commonly consumed.
  • Ascomycetes reproduce through structures called asci, producing ascospores.
  • Basidia are the structures through which club fungi typically reproduce.

Fungal Classification

  • Black bread mold is a representative of the phylum Zygomycota.
  • The Chytridiomycota phylum consists of the most primitive fungi, previously thought to be protists.
  • Ascomycota and Basidiomycota are considered sister taxa due to a shared recent common ancestor.

Fungal Reproduction and Life Cycle

  • Most fungal spores are nonmotile and can be produced either sexually or asexually.
  • Yeasts primarily reproduce asexually through budding.
  • Karyogamy, the fusion of nuclei, occurs within the basidia of mushrooms.

Ecological Roles and Interactions

  • Mycorrhizae enhance plant roots' absorptive surface area, benefiting plant nutrition.
  • Lichens represent a symbiotic relationship between fungi and photoautotrophs.

Fungal Problems and Use

  • The fungus causing black stem rust of wheat belongs to the basidiomycetes group.
  • The genus Amanita includes types of mushrooms that can be fatal if ingested.
  • Saccharomyces is a key genus used in the production of beer and wine.

True or False Statements

  • Fungi possess chitin in their cell walls; they do not contain cellulose.
  • Conidia are confirmed as asexual spores, while chytrids produce flagellated spores.
  • Microsporidia are unicellular parasites affecting animals, and true karyogamy occurs within the basidium during mushroom development.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Description

Test your knowledge on fungi with these flashcards from Biology Chapter 29. Learn about the structure, types, and functions of fungi and their significant roles in ecosystems. Perfect for reinforcing your understanding of fungal biology.

More Like This

Use Quizgecko on...
Browser
Browser