Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 25, Problem 5RQ
Alternation of generations means that plants produce:
- only haploid multicellular organisms
- only diploid multicellular organisms
- only diploid multicellular organisms with single-celled haploid gametes
- both haploid and diploid multicellular organisms
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What is a sporophyte?
A diploid plant that undergoes meiosis
A haploid plant that produces gametes via meiosis
A diploid plant that produces gametes via mitosis
A haploid plant that undergoes mitosis
Mitosis of diploid
cells
Single-celled, diploid
zygote
Multicellular, diploid
sporophyte
Sperm
Fertilization
Haploid spores
Mitosis of haploid
cells
Egg
Meiosis
Multicellular, haploid
gametophyte
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
Chapter 25 Solutions
Biology 2e
Ch. 25 - Figure 25.6 Which of the following statements...Ch. 25 - Figure 25.14 Which of the following statements...Ch. 25 - Figure 25.24 Which of the following statements...Ch. 25 - The land plants are probably descendants of which...Ch. 25 - Alternation of generations means that plants...Ch. 25 - Which of the following traits of land plants...Ch. 25 - How does a haplontic plant population maintain...Ch. 25 - What characteristic of Charales would enable them...Ch. 25 - Which one of these characteristics is present in...Ch. 25 - A scientist sequences the genome of Chara, red...
Ch. 25 - Which of the following features does not support...Ch. 25 - Which of the following structures is not found in...Ch. 25 - Stomata appear in which group of plants? Charales...Ch. 25 - The chromosome complement in a moss protonema is:...Ch. 25 - Why do mosses grow well in the Arctic tundra? They...Ch. 25 - A botanist travels to an area that has experienced...Ch. 25 - Microphylls are characteristic of which types of...Ch. 25 - A plant in the understory of a forest displays a...Ch. 25 - The following structures are found on the...Ch. 25 - The dominant organism in fern is the sperm spore...Ch. 25 - What seedless plant is a renewable source of...Ch. 25 - How do mosses contribute to returning nitrogen to...Ch. 25 - The production of megaphylls by many different...Ch. 25 - Why did land plants lose some of the accessory...Ch. 25 - What is the difference between extant and extinct?Ch. 25 - Describe at least two challenges that cactuses had...Ch. 25 - Describe a minimum of two ways that plants changed...Ch. 25 - To an alga, what is the main advantage of...Ch. 25 - In areas where it rains often, mosses grow on...Ch. 25 - What are the three classes of bryophytes?Ch. 25 - Describe two adaptations that are present in...Ch. 25 - Bryophytes form a monophyletic group that...Ch. 25 - How did the development of a vascular system...Ch. 25 - Which plant is considered the most advanced...Ch. 25 - Ferns are simultaneously involved in promoting...
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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
- The leafy, green moss plants that are familiar are gametophytes, haploid plants. This is very different from flowering plants and other seed plants. Does a leafy green moss plant grow from a spore or from a fertilized egg? Does the moss plant have both paternal parent and maternal parent?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_forwardHow does a haplontic plant population maintain genetic diversity? Zygotes are produced by random fusion Gametes are created through meiosis Diploid spores undergo independent assortment during mitosis The zygote undergoes meiosis to generate a haploid sporophyte.arrow_forward
- In ferns, which of these would be formed by meiosis inside a sporangium? haploid spores diploid spores diploid zygote haploid spermarrow_forwardAn alternation of generation life cycle in plants is advantageous because: each generation is morphologically similar. it protects reproductive structures. the gametes fuse in open water. it is haploid-dominant.arrow_forwardWhich of the following statements regarding plants is not correct? * Diploid plants produce haploid spores by mitosis. Gametophytes are haploid. Flower is the reproductive organ in plants. All plants have a life cycle with alternation of generations.arrow_forward
- Which of the following processes occurs in a plant's sexual life cycle? sporophytes produce gametes by meiosis sporophytes produce gametes by mitosis gametophytes produce gametes by meiosis gametophytes produce gametes by mitosisarrow_forwardWhich of the following is a universal feature of the life cycles of land plants? Genetically identical gametophyte and sporophyte stages Multicellular haploid and diploid gametes Morphologically identical gametophyte and sporophyte stages Alteration of generations between haploid gametophytes and diploid sporophytesarrow_forwardCompare the Venn diagram of sexual reproduction and asexual reproduction in plants. Where in the diagram would you add identical to parent? A) A B) B C) C D) D use photo Not Gradedarrow_forward
- The embryo found in the mosses, ferns, pines, and flowering plants is; Haploid Diploid Neitherarrow_forwardSporangia produce gametes via meiosis produce spores via meiosis produce gametes via mitosis Selected produce spores via mitosisarrow_forwardIn 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 generationsarrow_forward
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