Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 24, Problem 7RQ
During sexual reproduction, a homothallic mycelium contains
- all septated hyphae
- all haploid nuclei
- both mating types
- none of the above
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The Zygomycetes (bread molds) are a coenocytic fungus. This means that;
Their hyphae lack crosswalls
They only reproduce sexually
They reproduce using conidia
They have heterokaryotic hyphae
Rhizopus (bread mold) reproduces both sexually and asexually.
Rhizopus' sexual reproductive structure is called?
Conidia
The zygosporagium
The ascus
Which statement about life cycles with a dikaryon stage is false?
A zygosporangium results from the fusion of two coenocytic hyphae.
In effect, the dikaryon is neither diploid nor haploid.
Dikaryotic hyphae often have characteristics that are different from those of their n or 2n products.
The only true diploid structure is the zygote.
There are no gamete cells, only gamete nuclei.
Chapter 24 Solutions
Biology 2e
Ch. 24 - Figure 24.14 Which of the following statements is...Ch. 24 - Figure 24.17 Which of the following statements is...Ch. 24 - Figure 24.21 If symbiotic fungi are absent from...Ch. 24 - Which polysaccharide is usually found in the cell...Ch. 24 - Which of these organelles is not found in a fungal...Ch. 24 - The wall dividing individual cells in a fungal...Ch. 24 - During sexual reproduction, a homothallic mycelium...Ch. 24 - The life cycles of perfect fungi are most similar...Ch. 24 - The most primitive phylum of fungi is the...Ch. 24 - Members of which phylum produce a club shaped...
Ch. 24 - Members of which phylum establish a successful...Ch. 24 - The fungi that do not reproduce sexually used to...Ch. 24 - A scientist discovers a new species of fungus that...Ch. 24 - What term describes the close association of a...Ch. 24 - Why are fungi important decomposers? They produce...Ch. 24 - Consider an ecosystem where all the fungi not...Ch. 24 - A fungus that climbs up a tree reaching higher...Ch. 24 - A fungal infection that affects nails and skin is...Ch. 24 - The targets for anti-fungal drugs are much more...Ch. 24 - Yeast is a facultative anaerobe. This means that...Ch. 24 - The advantage of yeast cells over bacterial cells...Ch. 24 - Why are fungal insecticides an attractive...Ch. 24 - What are the evolutionary advantages for an...Ch. 24 - Compare plants, animals, and fungi, considering...Ch. 24 - Why is the large surface area of the mycelium...Ch. 24 - What is the advantage for a basidiomycete to...Ch. 24 - For each of the four groups of perfect fungi...Ch. 24 - Why does protection from light actually benefit...Ch. 24 - Ambrosia bark beetles carry Amb/os/e//a fungal...Ch. 24 - Ecologists often attempt to introduce new plants...Ch. 24 - Why can superficial mycoses in humans lead to...Ch. 24 - Explain how the Red Queen Hypothesis describes the...Ch. 24 - Historically, artisanal breads were produced by...Ch. 24 - How would treating an area of a forest with a...
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- A dikaryotic fungus will; Have two nuclei per cell lack crosswalls in its hyphae reproduce sexually by creating mushroomsarrow_forwardMitosis of diploid cells Single-celled, diploid zygote Multicellular, diploid sporophyte Sperm Fertilization Haploid spores Mitosis of haploid cells Egg Meiosis Multicellular, haploid gametophytearrow_forwardWhat is the term for a fungus cell that has two genetically distinct nuclei? diploid haploid mitotic dikaryotic monokaryoticarrow_forward
- An enzyme that prevents the fusion of hyphae is introduced to a basidiomycete. Which stage of the reproductive cycle would be halted as a result? plasmogamy fertilization karyogamy germinationarrow_forwardIn fungi, asexual spores are produced by_________ celldivision and have__________ set(s) of chromosomes.Sexual spores are produced by________ cell divisionin a(n)_______ and have_________ set(s) ofchromosomes.arrow_forwardIf you were to examine the Cordyceps fungal structures emerging from the dead insects under the microscope what would you see? Ascospores produced via sexual reproduction Conidia produced via sexual reproduction Zygospores produced via sexual reproduction Arbuscules produced via asexual reproductionarrow_forward
- Mushroom is a reproductive structure that consists largely of dikaryotic cells. true or falsearrow_forwardIndicate the ploidy number for each of the following cells indicated on the life cycle diagram above. Haploid = 1 and Diploid = 2. zygote Answer basidiospores Answer basidium with four nuclei Answer mycelia Answerarrow_forwardA hypothesized evolutionary advantage to asexual reproduction in fungi is that: -It allows them to form resting spores -It protects their genes from mutation -It allows them to avoid phages -It allows them to grow quickly when nutrient levels are richarrow_forward
- Which of these is a reproductive structure found in fungi? eggs fungal spoores gametes cystsarrow_forwardThe basidium of the club fungi could be correctly described as; A reproductive structure that produces diploid spores A sexual reproductive structure that produces 4 haploid spores An asexual reproductive structure that produces thousands of spores A sexually reproductive structure that produces 8 haploid sporesarrow_forwardThe reproductive structure of some fungi, including those in the phylum Basidiomycota, are called a: Question 15 options: Coenocytic hyphae Septated hyphae Mycelium Mushroomarrow_forward
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