Bio Lab Test 3

Are fungi autotrophs or heterotrophs?

heterotrophs

How do fungi break down molecules?

by using enzymes

What 3 ecological lifestyles do fungi occupy?

decomposers, parasitic fungi, mutualistic symbionts

decomposers

break down and absorb nutrients from nonliving organic material (saprotrophs)

parasitic fungi

absorb nutrients from living hosts, fungus benefits, host is harmed

mutualistic symbiont

absorb nutrients from hosts and reciprocate with actions that benefit the host

What are fungal cells called?

hyphae

What is a mass of hyphae called?

mycelium

What type of cell walls do have and what are they made of?

tubular, chitin

Which structures dominate fungus life cycle?

haploid

How are fungal gametes formed?

mitosis and differentiation of haploid cells

plasmogamy

union of cytoplasm from two parent mycelia

heterokaryon

cell with two separate haploid nuclei

In zygomycetes, do sporangia produce haploid or diploid spores, and are they asexual or sexual?

haploid, asexual

karyogamy

when two haploid nuclei fuse to form a single diploid nucleus

Is this a photo of sporangia or zygosporangia?

sporangia

Is this a photo of sporangia or zygosporangia?

zygosporangia

Where can Ascomycetes be found?

marine, freshwater, and terrrestrial habitats

Do ascomycetes produce asexual or sexual spores?

sexual

Where are spores produced in ascomycota?

asci

Do cells in the ascus go through mitosis or meiosis?

meiosis which leads to 8 ascospores

How does ascomycota reproduce?

via asexual spores called conidia

How are conidia produced?

at the tips of specialized hyphae called conidiophores

What are some examples of basidiomycetes?

mushrooms, puffballs, and shelf fungi

How are basidiomycetes described?

clublike basidium with transient diploid stage

Do the mycelium in basidiocarps reproduce sexually or asexually?

sexually