BIO-346 Exam 2 || A+ GRADED
What are protists? correct answers Single-celled eukaryotes that assist in primary production
What is the difference between a protist and a protozoan?
A. Protozoan are heterotrophs that feed on other organisms
B. All protozoan are protists correct answers A. Protozoan are heterotrophs that feed on other
organisms
B. All protozoan are protists
Historically, protists have been classified as:
A. Trophozoites and plankton
B. Protozoans, algae, and water molds correct answers B. Protozoans, algae, and water molds
These are the two main developmental stages of most protists
A. Syngamy and Schizogony
B. Trophozoite and cyst correct answers B. Trophozoite and cyst
Define the terms trophozoite and cyst: correct answers The trophozoite is the phase in which
the protist feeds on nutrients and grows, and the cyst phase is a very resistant, dormant phase
of the protist life cycle.
These are the main strategies of asexual reproduction in protists
A. Conjugation and syngamy
B. Binary fission, budding, and schizogony correct answers B. Binary fission, budding, and
schizogony
Sexual reproduction does occur among protists, while syngamy can be seen in many protist
groups, protistconjugation has only been reported in:
A. Acanthamoeba
B. Ciliates
C. Dictyostelum correct answers B. Ciliates
During this mechanism of sexual reproduction, protists produce haploid gametes that fuse
producing a diploid cell correct answers Binary Fission
This Eukaryotic Supergroup contains the Euglenozoans, some of which can be autotrophic
and heterotrophic correct answers Excavata
These Eukaryotic supergroups contain ciliates, water molds, and slime molds
A. Excavata and Opisthokonta
B. Chromalveolata and Amoebozoa correct answers B. Chromalveolata and Amoebozoa
During this mechanism of asexual reproduction, the nucleus of a protist cell divides multiple
times before the cell divides into smaller cells.
A. Budding
B. Binary fission
C. Schizogony correct answers C. Schizogony
This group of organisms are heterotrophic and major sources of antibiotics such as penicillin.
, A. Plasmodium
B. Fungi such as Penicillium correct answers B. Fungi such as Penicillium
These are some of the main ecological roles of protists in the environment
A. Primary production, mixotrophy, bacterivory, parasitism, symbiosis
B. Methane and carbon dioxide production correct answers A. Primary production,
mixotrophy, bacterivory, parasitism, symbiosis
Why are fungi considered microbial organisms even though many members of this kingdom
are multicellular?
A. Because we don't know what we are talking about
B. Because many unicellular yeast and spores of macroscopic fungi are microscopic correct
answers B. Because many unicellular yeast and spores of macroscopic fungi are microscopic
What dierentiates water/slime molds (protists) from fungal molds?
A. The cell wall of fungi is made of chitin and the one from slime/water molds is made of
cellulose
B. Fungi are saprotrophic correct answers A. The cell wall of fungi is made of chitin and the
one from slime/water molds is made of cellulose
Fungi are molds (multicellular) and yeasts (unicellular). While molds can form hyphae,
yeasts can form:
A. Hyphae-like structures made of attached yeasts (pseudohyphae)
B. Coenotic hyphae (non-septate or continuous hyphae)
C. Hyphae that have cell walls betwen cells (septate hyphae) correct answers A. Hyphae-like
structures made of attached yeasts (pseudohyphae)
While animals have cholesterol in their cell membranes, fungi contain:
A. Pseudopeptidoglycan
B. Ergosterol correct answers B. Ergosterol
This Division of the kingdom fungi reproduces exclusively through sexual reproduction
A. Ascomycota
B. Basidiomycota correct answers B. Basidiomycota
The Division Glomeromycota includes most known mycorrhizal fungi, and like the
Microscoporidia, reproduces exclusively through this mechanism:
A. Sexual reproduction
B. Asexual reproduction correct answers B. Asexual reproduction
What benefits do mycorrhizal fungi (arbuscular and ectomycorrhizal) provide to their host
plant in exchange for plant metabolites?
A. Mineralize nutrients
B. Protection against pathogens, access to phosphorus and water correct answers B.
Protection against pathogens, access to phosphorus and water
True or false: hyphae can form a network (mycelium) that forms the body of fleshy fungi
A. True
B. False correct answers A. True
What are protists? correct answers Single-celled eukaryotes that assist in primary production
What is the difference between a protist and a protozoan?
A. Protozoan are heterotrophs that feed on other organisms
B. All protozoan are protists correct answers A. Protozoan are heterotrophs that feed on other
organisms
B. All protozoan are protists
Historically, protists have been classified as:
A. Trophozoites and plankton
B. Protozoans, algae, and water molds correct answers B. Protozoans, algae, and water molds
These are the two main developmental stages of most protists
A. Syngamy and Schizogony
B. Trophozoite and cyst correct answers B. Trophozoite and cyst
Define the terms trophozoite and cyst: correct answers The trophozoite is the phase in which
the protist feeds on nutrients and grows, and the cyst phase is a very resistant, dormant phase
of the protist life cycle.
These are the main strategies of asexual reproduction in protists
A. Conjugation and syngamy
B. Binary fission, budding, and schizogony correct answers B. Binary fission, budding, and
schizogony
Sexual reproduction does occur among protists, while syngamy can be seen in many protist
groups, protistconjugation has only been reported in:
A. Acanthamoeba
B. Ciliates
C. Dictyostelum correct answers B. Ciliates
During this mechanism of sexual reproduction, protists produce haploid gametes that fuse
producing a diploid cell correct answers Binary Fission
This Eukaryotic Supergroup contains the Euglenozoans, some of which can be autotrophic
and heterotrophic correct answers Excavata
These Eukaryotic supergroups contain ciliates, water molds, and slime molds
A. Excavata and Opisthokonta
B. Chromalveolata and Amoebozoa correct answers B. Chromalveolata and Amoebozoa
During this mechanism of asexual reproduction, the nucleus of a protist cell divides multiple
times before the cell divides into smaller cells.
A. Budding
B. Binary fission
C. Schizogony correct answers C. Schizogony
This group of organisms are heterotrophic and major sources of antibiotics such as penicillin.
, A. Plasmodium
B. Fungi such as Penicillium correct answers B. Fungi such as Penicillium
These are some of the main ecological roles of protists in the environment
A. Primary production, mixotrophy, bacterivory, parasitism, symbiosis
B. Methane and carbon dioxide production correct answers A. Primary production,
mixotrophy, bacterivory, parasitism, symbiosis
Why are fungi considered microbial organisms even though many members of this kingdom
are multicellular?
A. Because we don't know what we are talking about
B. Because many unicellular yeast and spores of macroscopic fungi are microscopic correct
answers B. Because many unicellular yeast and spores of macroscopic fungi are microscopic
What dierentiates water/slime molds (protists) from fungal molds?
A. The cell wall of fungi is made of chitin and the one from slime/water molds is made of
cellulose
B. Fungi are saprotrophic correct answers A. The cell wall of fungi is made of chitin and the
one from slime/water molds is made of cellulose
Fungi are molds (multicellular) and yeasts (unicellular). While molds can form hyphae,
yeasts can form:
A. Hyphae-like structures made of attached yeasts (pseudohyphae)
B. Coenotic hyphae (non-septate or continuous hyphae)
C. Hyphae that have cell walls betwen cells (septate hyphae) correct answers A. Hyphae-like
structures made of attached yeasts (pseudohyphae)
While animals have cholesterol in their cell membranes, fungi contain:
A. Pseudopeptidoglycan
B. Ergosterol correct answers B. Ergosterol
This Division of the kingdom fungi reproduces exclusively through sexual reproduction
A. Ascomycota
B. Basidiomycota correct answers B. Basidiomycota
The Division Glomeromycota includes most known mycorrhizal fungi, and like the
Microscoporidia, reproduces exclusively through this mechanism:
A. Sexual reproduction
B. Asexual reproduction correct answers B. Asexual reproduction
What benefits do mycorrhizal fungi (arbuscular and ectomycorrhizal) provide to their host
plant in exchange for plant metabolites?
A. Mineralize nutrients
B. Protection against pathogens, access to phosphorus and water correct answers B.
Protection against pathogens, access to phosphorus and water
True or false: hyphae can form a network (mycelium) that forms the body of fleshy fungi
A. True
B. False correct answers A. True
