Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 31.2, Problem 1CC
Summary Introduction
To differentiate: Life cycles of
Concept introduction:
Many plants, animals, and fungi reproduce by sexual reproduction. Sexual life cycle involve an alternation between meiosis and fertilization. In meiosis, the diploid cell gives rise to a haploid cell and two haploid cells (gametes) fuse to form a diploid zygote (fertilization). There are three main categories of sexual life cycle: diploid-dominant, haploid-dominant, and alternation of generations.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
please 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?
Alternation of generations means
-One phase of the life cycle is photosynthetic and the other is heterotrophic.
-One phase of the life cycle is unicellular and the other is multicellular.
-One phase of the life cycle takes place on land and the other in water.
-One phase of the life cycle is multicellular diploid and the other is multicellular haploid.
-One phase of the life cycle is motile and the other is stationary.
In a life cycle with alternation of generations, multicellularhaploid forms alternate with(A) unicellular haploid forms.(B) unicellular diploid forms.(C) multicellular haploid forms.(D) multicellular diploid forms.
Chapter 31 Solutions
Campbell Biology
Ch. 31.1 - Prob. 1CCCh. 31.1 - Prob. 2CCCh. 31.1 - MAKE CONNECTIONS Review Figure 10.4 and Figure...Ch. 31.2 - Prob. 1CCCh. 31.2 - WHAT IF? Suppose that you sample the DNA of two...Ch. 31.3 - Why are fungi classified as opisthokonts despite...Ch. 31.3 - Prob. 2CCCh. 31.3 - Prob. 3CCCh. 31.4 - Prob. 1CCCh. 31.4 - Give examples of how form fits function in...
Ch. 31.4 - WHAT IF? Suppose that the mutation of an...Ch. 31.5 - What are some of the benefits that liehen algae...Ch. 31.5 - Prob. 2CCCh. 31.5 - WHAT IF? How might life on Earth differ from what...Ch. 31 - How does the morphofogy of multicellular fungi...Ch. 31 - Prob. 31.2CRCh. 31 - Did multicellularity originate independently in...Ch. 31 - Prob. 31.4CRCh. 31 - How are furigi important as decomposers,...Ch. 31 - Prob. 1TYUCh. 31 - Prob. 2TYUCh. 31 - Prob. 3TYUCh. 31 - Prob. 4TYUCh. 31 - Prob. 5TYUCh. 31 - Prob. 6TYUCh. 31 - WRITE ABOUT A THEME: ORGANIZATION As you read in...Ch. 31 - SYNTHESIZE VOUR KNOWLEDGE This wasp is the...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- 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.arrow_forwardFigure 24.14 Which of the following statements is true? A dikaryotic ascus that forms in the ascocarp undergoes karyogamy, meiosis, and mitosis to form eight ascospores. A diploid ascus that forms in the ascocarp undergoes karyogamy, meiosiis, and mitosis to form eight ascospores. A haploid zygote that forms in the ascocarp undergoes karyogamy, meiosiis, and mitosis to form eight ascospores. A dikaryotic ascus that forms in the ascocarp undergoes plasmogamy, meiosis, and mitosis to form eight ascospores.arrow_forwardDoes structure "A" produce haploid or diploid spores? Is structure "B" coenocytic or septate? A MacBook Proarrow_forward
- A pollen of maize with nuclei labeled P, Q and R fertilized an embryo sac with nuclei labeled S, T, U, V, W, X, Y and Z as shown here. R V Y Synergids U W P Tube nucleus Antipodals Which of the following combinations could be found in the embryo? i) PQR, ii) QRY, iii) VWQ, iv) RY Which of the above combinations could be found in the aleurone layer of the seed? Which of the above combinations could be found in the germinating pollen tube?arrow_forwardIn embryophytes, especially spermatophya, what is the difference between a "sporocyte" (e.g., megasporocyte) and the actual spore (e.g., megaspore)? a) Meiosis: Megasporocyte is still diploid, megaspore haploid b) Mitosis, number of nuclei: Megaspore has eight cell nuclei, megasporocyte only one c) Cytokinesis: Megasporocyte has only one cell, Megaspore can have several (as endosporic gametophyte). d) None: the two terms are synonymous. e) Meiosis: Megaspore is still diploid, megasporocyte haploidarrow_forwardWhen the Ascomycetes fungus reproduces sexually, mating type A fungi cross fertilize mating type a fungi. The resulting zygotes undergo meiotic and then mitotic division to produce asci with eight ascospores. The ascospores in the asci are ordered and reflect the position of the parental nuclei in the zygote. Use the passage to answer the question. Although ascospores are produced by mitotic division, none of the spores develop into fungi that are identical to either parental hyphae. What is the BEST explanation for this observation? A. The spores inherit half their genes from each parent. B. The spores inherit haploid nuclei from their parents. C. The spores inherit mutations as a result of meiosis. D. The spores inherit mutations as a result of mitosis.arrow_forward
- When the Ascomycetes fungus reproduces sexually, mating type A fungi cross fertilize mating type a fungi. The resulting zygotes undergo meiotic and then mitotic division to produce asci with eight ascospores. The ascospores in the asci are ordered and reflect the position of the parental nuclei in the zygote. Use the passage to answer the question. Based on the diagram, how many unique ascospores are produced in each ascus resulting from the cross fertilization of two Ascomycetes fungi? A. 1 B. 2 C. 4 D. 8arrow_forwardIn a particular plant species, 2n=12. For this organism, how many chromosomes, and how many DNA molecules will be present per cell for each of the following? e) root meristem cell in telophase of mitosis (cytokinesis complete) f) microspore mother cell (in anther) in prophase 1 of meiosis g) microspore mother cell in metaphase II of meiosis h) pollen grain ( after meiosis is and cytokinesis complete)arrow_forwardWhen the Ascomycetes fungus reproduces sexually, mating type A fungi cross fertilize mating type a fungi. The resulting zygotes undergo meiotic and then mitotic division to produce asci with eight ascospores. The ascospores in the asci are ordered and reflect the position of the parental nuclei in the zygote. Use the passage to answer the question. A fungus with white spores cross fertilizes a fungus with black spores. If 10% of the progeny bear white spores while 90% of the progeny bear black spores, what must be true? A. The trait for spore color is determined by exactly one gene. B. The trait for spore color is determined by more than one gene. C. The allele for black spores is dominant over that for white spores. D. The allele for white spores is dominant over that for black spores.arrow_forward
- 8) The diagram below represents a yeast cell that is in the process of budding, a form of asexual reproduction. Nucleus -Bud "Nucleus Which of the following statements describes the outcome of this process? A) The two cells that result will each contain half the species number of chromosomes. B) The two cells that result will have identical DNA. C) The bud will develop into a zygote. D) The bud will start to divide by the process of meiotic cell division.arrow_forwardPlasmogamy is the fusion of(a) two haploid cells including their nuclei.(b) two haploid cells without nuclear fusion.(c) sperm and egg.(d) sperm and two polar nuclei. Please try to break the solutions into as many steps as practically possible and the steps should come one by one and they should be short and crisp and plagiarism-free.arrow_forwardMAKE CONNECTIONS Look at Figure 12.7 and imagine the twodaughter cells undergoing another round of mitosis, yielding four cells.Compare the number of chromosomes in each of those four cells, aftermitosis, with the number in each cell in Figure 13.8, after meiosis. Whatis it about the process of meiosis that accounts for this difference, eventhough meiosis also includes two cell divisions?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning