Biological Science, Loose-leaf Edition (7th Edition)
7th Edition
ISBN: 9780135272800
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 28, Problem 5TYU
What does it mean to say that a life cycle is gametophyte dominant versus sporophyte dominant?
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What are the five key traits that appear in nearly all plants but are absent in charophytes? If these traits are absent in charophytes what does that make them? What is a gametophyte? What is sporophyte? Are they haploid or diploid? What do they produce?
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Which of the following comparisons between the moss life cycle and fern life cycle are correct? A) Mosses have flagellated sperm that need water to reach the female gamete, while the sperm of ferns are unflagellated and are not dependent on water.B) The sporophyte generation is smaller than the gametophyte generation in mosses, but the sporophyte generation is much larger than the gametophyte generation in ferns.C) The spores are produced in capsules on stalks in mosses but in small structures called sori on the underside of leaves in ferns.D) The gametes are produced in gametangia in mosses but in specialized structures on the underside of leaves in ferns.E) Both kinds of plants depend on wind for dispersal of spores.
Chapter 28 Solutions
Biological Science, Loose-leaf Edition (7th Edition)
Ch. 28 - What important role does lignin play in vascular...Ch. 28 - Prob. 2TYKCh. 28 - What is a pollen grain? a. male gametophyte b....Ch. 28 - 5. What does it mean to say that a life cycle is...Ch. 28 - 6. SOCIETY Soils, water, and the atmosphere are...Ch. 28 - Prob. 7TYUCh. 28 - Explain the difference between homosporous and...Ch. 28 - Angiosperms such as grasses, oaks, and maples are...Ch. 28 - PROCESS OF SCIENCE You have been hired as a field...Ch. 28 - Is long-distance sex possible in mosses?
Moss...
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- A B C D G E F H a) On the diagram, which labeled structure represents the mature male gametophyte? I b) Which labeled structure represents the female megasporangium, prior to the production of spores? c) On the diagram, which labeled structure represents the immature male gametophyte? F d) Which labeled structure represents the mature female gametophyte? Jarrow_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_forwardWhich is the dominant part of the Lycopodium life cycle, the sporophyte or gametophyte?arrow_forward
- In general where is thesporophyte positioned inrelation to the gametophyte inbryophytes? How does thesporophyte obtain nutrients?arrow_forwardIf ferns produce spores, are they a sporophyte or agametophyte? Are they haploid or diploi Describe two differences between a fern sporophyte and a moss sporophyte. Are fern spores haploid or diploid? Are the spores produced by meiosis or mitosis? Where are the spores produced?arrow_forwardThe male gametophyte of the moss looks identical to the female from the naked eye, but the photo below (I.s. at 4x and then at 40 x) shows that the tip contains the structures where male gametes are produced.arrow_forward
- The three illustrations represent the three types of relationships between the haploid gametophyte and diploid sporophyte generations found among plants. Identify the types of plants and the characteristics that belong with each of the three types of relationships. Bryophyte Ferns Seed plants ferns and horsetails mosses, liverworts, and other bryophytes Ginko biloba, spruce trees, and other gymnosperms The gametophyte requires nourishment from the sporophyte in order to survive. The sporophyte and gametophyte generations grow independently and produce differently shaped plants. The sporophyte cannot survive without nourishment from the gametophyte. Answer Bank Incorrectarrow_forwardOne of the genera of Lycophytes are the Selaginellaceae. Like other Lycophytes, Selaginellids bear their spores in a strobilus but they have an unusual strobilus. Which answer below best describes this difference? O their spores are always diploid O they are gaemtophyte dominant O their spores are heterosporous O their strobilus is dependnent upon the female gametophyte like mosses APR 25 étv MacBook Pro G Search or type URL @ #3 % %24arrow_forwardWhat is the genetic load in angiosperms and gymnosperms of the following structures: Microsporophyll Microsporangium Microsporocyte Microspora Microgametophyte Megasporophilic Megasporangium Megasporocyte Megaspore Megagametophytearrow_forward
- a) What role does 'alternation of generation' play in encouraging survival of simple plants like the Bryophytes and Hepatophytes. b) i) Anthrophytes also show alternation of generation. Identify the structures that represent these two stages in its life cycle. ii) Explain why the alternation of generation in Anthrophytes must be different from that of the Bryophytes.(-arrow_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_forwardWhich of the following statements is accurate? a) All plants have identical sporangia, all producing the same type of spores b) Plants have an embryo that is protected inside (and nourished by) the gametophyte c) Gametangia produce gametes by meiosis whereas sporangia produce spores by mitosis d) Gametangia always produce haploid gametes whereas sporangia produce diploid spores e) Gametangia are multicellular structures whereas sporangia are unicellular structuresarrow_forward
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