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Which feature of the agent that is responsible for the global decline in amphibians suggests they belong to the first phylum within their kingdom to be seen in the fossil record?

spores with flagella

a diploid stage in the lifecycle

a heterokaryotic stage in the lifecycle

haploid gametophytes

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Reid Wolff
Reid WolffLv2
28 Sep 2019

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Related questions

About how long does regeneration of a planarian transected horizontally require to form two complete planarians?

For what purposes is planarian regeneration studied?

How does planarian regeneration differ from that of amphibians?

TRUE OR FALSE: Planarian stem cells are different because they are always present, meaning they do not have to undergo clonal expansion before becoming active.

To what phylum do planarians belong?

Which of these areas if amputated from the remaining planarian body will not regenerate to form a new animal?

What is the population of stem cells in planarians responsible for their regenerative properties?

1.A mycologist visits your biology class and discusses herresearch on a particular fungus that lives on the bark of damagedspruce trees. She explains that the fungal hyphae of her researchorganism is heterokaryotic. You raise your hand and request thatshe define that word. Her correct response is

heterokaryotic means that thenuclei of the fungal hyphae are genetically the same.
heterokaryotic means that eachcompartment of the hyphae contain two distinct nuclei.
heterokaryotic means that thenuclei of each compartment of the hyphae are geneticallydistinct.

heterokaryotic means that each compartment of the hyphaecontains only one nucleus.

2. Select the true statements concerning reproduction ofbasidiomycetes. (Check all that apply.)

The adult forms of a typicalbasidiomycete consists of a mass of dikaryotic primarymycelia.
The secondary mycelia fuse to formprimary mycelia. The primary mycelia form the fruiting body.
The gills of an Amanitamushroom contains basidiospores.
Karyogamy produces a diploid zygotethat undergoes meiosis.

Meiosis produces basidiospores, and the fusion of spores fromdifferent mating strains produces the primary mycelium.

3. In the life cycle of a zygomycete, after the zygospore isformed, the next event will be

dikaryon formation.
plasmogamy.
meiosis.
mitosis.

karyogamy.

4. Why does champagne have bubbles?

CO2 is used to makeglucose during respiration.
Yeast fermentation continues afterthe champagne is bottled.
Dead yeast cells releaseCO2 into the bottles.

Yeast produce O2 during aerobic respiration.

5. Many antibacterial antibiotics interfere with proteinsynthesis. Why would these not be a good target for antifungaldrugs?

Fungi can rapidly metabolizedrugs.
Fungi produce few proteins.
Chitin cell walls prevent uptake ofdrugs.
Human and fungal ribosomes areextremely similar to each other.

Fungi absorb proteins during decomposition of organicmatter.

6. Which molecule would be an indicator of fungal contaminationin a drug preparation?

Chitin
Lignin
Collagen
Cellulose

Deoxyribose

7. Why can lichens live on bare rock?

UV radiation powers enzymes thatallow the fungus to extract organic material from itssurroundings.
The fungi are autotrophic.
The photosynthetic endosymbiontprovides the fungus with nutrition.
They absorb heat from the sun.

They secrete acids to liberate minerals from the bare rock.

8. What type of symbiotic relationship is exemplified bymycorrhizal fungi?

Parasitism
Commensalism
Atavism

Mutualism

9. In what way are bacteria and fungi similar?

Cell wall components
Ribosome structure
Design of the nucleus

Ecological function

10. he fungal group that is most closely related to ancestralfungi are the

Zygomycota.
Basidomycota.
Ascomycota.

Chytridomycota.

11.Select the INCORRECT statement(s) concerning reproduction ofthe mold Rhizopus.

Fungal hyphae are multinucleate andhaploid.
Meiosis comes immediately beforefertilization.
The germinating zygosporangiumcontains diploid nuclei.
Rhizopus exclusivelyreproduces asexually.

Zygospores are only produced after meiosis.

12. Primary mycelia contain twice as much DNA as secondarymycelia.

True

False

13.After severe floods homeowners often return home to find thewall of their homes covered in mold. How does mold survive on wetwallboard?

It eats the gypsum that makes upthe wallboard.
Spores from within the wallboardgerminate and start growing.
It uses the wallboard as asubstrate but extracts nutrients from the air.

It digests the cellulose in the paper backing.

14. Why is the term "fungal cell mitosis" not technicallyaccurate?

The septa between nuclei form priorto mitosis.
All of the mycelium undergoesmitosis at the same time.
All stages of mitosis occur withinthe nucleus.

The mitotic spindle spans across the perforations of thesepta.

15. Select the true statements regarding the lifecycles ofbasidiomycetes and ascomycetes. (Check all that apply.)

Basidiocarps and ascocarps arefunctionally equivalent.
Dikaryotic mycelia are the same asdiploid mycelia.
Ascogenic hyphae are functionallyequivalent to secondary mycelia.

Both basidiospores and ascospores are stored externally.

16. A division of fungi that lacks septa in their hyphae exceptwhen they form sporangia or gametangia is the

ascomycetes.
zygomycetes.
chytridomycetes

basidiomycetes.

PLEASE HELP

1)Mushrooms and other fungi were once lumped in with the plant kingdom. Modern science has separated them into their own kingdom. Kingdom Fungi is distinguished from Kingdom Plantae by the fact that unlike plants fungi.

A)grow a haploid multicellular form from a haploid spore

B)have no cell walls

C)grow, rather than locomote, toward resources

D)are absorptive heterotrophs.

E)have no haploid multicellular stage

2)Members of the Kingdom Fungi are easily distinguished from the Kingdom Plantae because the Fungi

A)Do not have photosynthtic pigments.

B)Are mostly not adapted for living on land

C)Do not have cell walls

D)are primarily unicellular

E)All the above

3)Which of the following would NOT be part of a lichen?

A)chlorophytes

B) zygosporangia

C) basidiocarps

D)Soredia

E)Asci

4)The process of metamorphosis transforms a ______ into a ______________.

A)larva; sexually mature adult

B) blastopore;mouth

C)pseudocoelom; true coelom

D)zygote;blastula

E)blastula;gastrula

5)Which of the following tissues or structures could NOT be derived from ectoderm?

A) all but the digestive tract of a jellyfsh

B) all thin skin of a platyhelminth

C)the brain of a squid

D) the muscles of a nematode

E)your epidermis

6)Which of the following is NOT a characteristic of the phylum Platyhelminthes?

A) true mesodermal tissue

B) cephalization involving concentration of nerve ganglia

C) gas and water exchange is across the thin body wall

D) free living and parasitic form

E) segmentation

7)A triploblastic animal in which the fluid?filled body cavity is only partially lined (lined on one side) with mesodermal tissue is referred to as:

A)coelomate

B)deuterostome

C)acoelomate

D)protostome

E)pseudocoelomate

8)Which of the following groups are diploblastic animals?

A)corals

B) sponges

C) comb jellies

D) a and b

E) a and c

9)Animals that actively move in a unidirectional fashion through their environment would be expected to exhibit which of the following characteristics?

A) bilateral symmetry

B) sponges

C) comb jellies

D) a and b

E) a and c

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