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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Label all stages in animal and plant life cycle with diploid, haploid as well as meiosis, mitosis, maturation and fertilisation
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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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- Figure 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_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_forward
- In ferns, which of these would be formed by meiosis inside a sporangium? haploid spores diploid spores diploid zygote haploid spermarrow_forwardThe conifer plant has 12 chromosomes. For each of the four stages on the diagram of the conifer life cycle, labelled A-D, identify whether the stage is haploid or diploid, and indicate the number of chromosomes that would be found in the cells at each stage. Stage Haploid or Diploid? Number of chromosomes found in cells? A B C Darrow_forwardWhich 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_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
- 8) What is a key characteristic that distinguishes the plant life cycle from the animal life cycle? Group of answer choices unicellular gametes a diploid zygote diploid dominance a multicellular haploid generation a multicellular diploid generationarrow_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_forwardhttp://botit.botany.wisc.edu/botany_130/diversity/plants/mosses.html Make a complete moss life cycle with the following phases and structures. Note: download the images of Mnium from this link and arrange them in the exact sequence to make the lifecycle. Lifecycle structures with cell division: Meiosis, fertilization within archegonium, capsule (sporangium), spores (n), protonema (n) (Image), male gametophyte (n) (Image), female gametophyte (n) (Image), antheridia (Image), archegonia (Image), sperm, egg, water, zygote (2n), embryo, young growing sporophyte (2n), mature sporophyte (2n) (Image), rhizoids. You can insert the non-image part, using the textbox and fill out the suitable s text. For symbol, click on the shape option and inter in your lifecycle diagram at the required placearrow_forward
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