Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 23, Problem 13RQ
Alternation of generations describes which of the following?
- The haploid form can be multicellular; the diploid form is unicellular
- The haploid form is unicellular; the diploid form can be multicellular
- Both the haploid and diploid forms can be multicellular
- Neither the haploid nor the diploid forms can be multicellular.
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Students have asked these similar questions
In the space below, diagram generalized haplontic, diplontic, and alternation of generations life cycles.
Make sure to indicate whether each stage in the life cycle is haploid or diploid, and unicellular or
multicellular. Also write the stage's name (e.g., zygote, gametophyte, spore, etc.) if it has one. You don't
need to draw the stages - e.g., for a zygote you can just write "zygote, unicellular, 2N". Also make sure
to indicate where exactly in the life cycle meiosis takes place. Please draw and label these as
possible
clearly
as
Haplontic
Diplontic
Alternation of generations
Alternation of generation refers to
alternation between asexually reproducing and
sexually reproducing organisms
alternation of diploid and haploid generations
alternation of both asexually reproducing and
sexually reproducing organisms, as well as
diploid and haploid generations
alternation between seed formation stage and
zygotes
The figure below shows the life cycle of the fungus Neurospora. The adult stage of the Neurospora is a multicellular haploid.
a) Between which two stages of the Neurospora life cycle (shown above) do most mitotic cell division o
Chapter 23 Solutions
Biology 2e
Ch. 23 - Figure 23.5 What evidence is there that...Ch. 23 - Figure 23.25 Which of the following statements...Ch. 23 - Figure 23.28 Which of the following statements...Ch. 23 - What event is thought to have contributed to the...Ch. 23 - Which characteristic is shared by prokaryotes and...Ch. 23 - Mitochondria most likely evolved by ___________ ....Ch. 23 - Which of these protists is believed to have...Ch. 23 - In 2016, scientists published the genome of...Ch. 23 - Which of the following observations about a...Ch. 23 - Protists that have a pellicle are surrounded by...
Ch. 23 - Piotists with the capabilities to perform...Ch. 23 - Which of these locomotor organs would likely be...Ch. 23 - Alternation of generations describes which of the...Ch. 23 - The amoeba E. histolytica is a pathogen that forms...Ch. 23 - Which protist group exhibits mitochondrial...Ch. 23 - Conjugation between two Paramecia produces total...Ch. 23 - What is the function of the raphe in diatoms?...Ch. 23 - What genus of piotists appears to contradict the...Ch. 23 - A marine biologist analyzing water samples notices...Ch. 23 - An example of carbon fixation is photosynthesis...Ch. 23 - Which parasitic protist evades the host immune...Ch. 23 - Which of the following is not a way that piotists...Ch. 23 - Describe the hypothesized steps in the origin of...Ch. 23 - Some aspects of eukaryotes are more similar to...Ch. 23 - Explain in your own words why sexual reproduction...Ch. 23 - Giaidia iamblia is a cyst-forming protist parasite...Ch. 23 - Explain how the definition of protists ensures...Ch. 23 - The chllorophyte (green algae) genera Ulva and...Ch. 23 - Why might a light-sensing eyespot be ineffective...Ch. 23 - Opisthokonta includes animals and fungi, as well...Ch. 23 - Describe two ways in which paramecium differs from...Ch. 23 - How does killing Anopheles mosquitoes affect the...Ch. 23 - Without treatment, why dees African sleeping...Ch. 23 - Describe how increasing stress to the ocean would...
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- 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.arrow_forwardMany of the organisms we learned about go through alternation of generations. Which of the following is true about alternation of generations? Group of answer choices Alternation of generations can result in separate haploid and diploid individuals Alternation of generations only involves mitosis Alternation of generations only happens in animals Alternation of generations results in hyphae forming a myceliumarrow_forwardWhich of the following is TRUE for animal life cycle, but not for plant life cycle? O gametes are formed by mitosis O gametes are formed by meiosis O unicellular gametes O multicellular gametophytes O spores are formed by meiosis « Prevjousarrow_forward
- Which of the following cells is most likely to contain haploid cells? Group of answer choices a sirloin steak a lizards replaceable tail a jellyfish tentacle an apple blossomarrow_forwardWhat is the ploidy level of the gametophyte generation in the Cycadophyta? O haploid (1n) diploid (1n) triploid (3n) O diploid (2n)arrow_forwardFigure 7.2 If a mutation occurs so that a fungus is no longer able to produce a minus mating type, will it still be able to reproduce?arrow_forward
- Label all stages in animal and plant life cycle with diploid, haploid as well as meiosis, mitosis, maturation and fertilisationarrow_forwardMitosis of diploid cells Single-celled, diploid zygote Multicellular, diploid sporophyte Sperm Fertilization Haploid spores Mitosis of haploid cells Egg Meiosis Multicellular, haploid gametophytearrow_forwardAfter plasmogamy has occurred, many molds (Mucoromycetes) exist in a heterokaryotic stage for up to centuries at a time. What occurs at the immediate end of this stage? The nuclei fuse in a process called karyogamy. The hyphae fuse in a process called karyogamy. Diploid spores are produced in various spore-producing structures. A haploid zygote is formed that becomes multicellular through repeated rounds of mitosis.arrow_forward
- The 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_forwardplease answer, do not copy from google please What is the shape of the ascus? The ascospores inside the asci are produced by meiosis. Are ascospores haploid or diploid? Interspersed among the asci are sterilefilaments, the paraphyses. Deduce the function of paraphyses. The ascospores are released from the asci and undergo mitotic division upon germination. Are the individuals germinating from ascospores haploid or diploid?arrow_forwardFigure 23.25 Which of the following statements about Paramecium sexual reproduction is false? The macronuclei are derived from micronuclei. Both mitosis and meiosis occur during sexual reproduction. The conjugate pair swaps macronuclei. Each parent produces four daughter cellsarrow_forward
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