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 7RQ
How 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.
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Sporangia
produce gametes via meiosis
produce spores via meiosis
produce gametes via mitosis
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produce spores via mitosis
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
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
- In plant life cycles, (a) the first products of meiosis are gametes (b) spores are part of the diploid sporophyte generation (c) the embryo gives rise to a zygote (d) the first stage in the diploid sporophyte generation is the zygote (e) the first stage in the haploid gametophyte generation is the prothallusarrow_forwardIn ferns, which of these would be formed by meiosis inside a sporangium? haploid spores diploid spores diploid zygote haploid spermarrow_forwardDraw a simple diagram illustrating alternation of generations in plants, including the sporophyte and gametophyte generations, spores, gametes (eggs and sperm), meiosis, and fertilization. Be sure to indicate whether each generation or kind of cell is haploid or diploid.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_forwardArrange the following in correct developmental sequence : Male gamete, Potential pollen mother cell, sporogenous tissue, Pollen grains, Microspore tetrad.arrow_forwardSexual plant reproduction begins with the diploid generation and moves into the haploid generation. O True O Falsearrow_forward
- 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 zygotesarrow_forwardTomato has diploid chromosomes number of 24. How many chromosomes would be expected in: microspore mother cell a leaf cell an endosperm cell an egg nucleus a sperm nucleusarrow_forwardfern nrothalli.... antheridia and archegonia. Student Preparation Read text Chapter 16, pages 366-390. Figure 1: Alternation of Generations Mitosis Spores 60 - + - + Meiosis One cell from Sporophyte undergoes meiosis Gametophytes Haploid multicellular individuals 1n 2n saldy Quisetum, and at least one fern - Gamete + Gamete Fertilization Sporophyte Diploid multicellular individual 1. Are these thalli the gametopytes or sporophytes?_ 2. Are the thalli haploid or diploid? Mitosis Exercise I Marchantiophyta: The Liverworts Examine with the dissecting microscope the thalli of the relatively large, dichotomously branching gametophytes of Marchantia 3. Are any gemma cups containing gemmae present on your plant? 4. What is the function of gemmae?. 78 Zygote Examine carefully with the dissecting microscope the additional liverworts that are available. Note the dichotomous branching, the midrib-like region, and the air pores on the upper (dorsal) surface. 5. How is dichotomous branching…arrow_forward
- The sporophyte develops within the female gametophyte. Examine the mature sporophyte image. The sporophyte is attached to the gametophyte by a foot. Spores are produced by meiosis in a capsule located on a stalk that extends downward from the foot. The long green strands located among the spores are called elaters. The elaters assist in spore dispersal. Label the sporophytearrow_forwardDrag the terms below into their proper position on the diagram of the life cycle of Laminaria. Drag term so this symbol is over the correct red circle on the diagram. You have three attempts to get the right answer but each attempt will have points deducted. Zoospores Zygote Mature sporophyte Female gametophyte Sperm Fertilization occurs Haploid stages Sporangium Meiosis occurs Ova (egg) Male gametophyte Diploid stages MacBook Pro & delete } Parrow_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
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