Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 31, Problem 2CQ
Summary Introduction
To explain: The reasons by which
Introduction: The plants which belong to bryophyta are considered as small and simple, as they do not have any vascular tissue. They do not produce seeds and flowers but have a dominant gametophyte life cycle.
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Why have bryophytes such as mosses been able to diversify intoso many species even though they have relatively small, dependentsporophytes?
Do mosses have an alternation of isomorphic or heteromorphic generations? That is, can you easily tell a moss gametophyte from a moss sporophyte? When we look at leafy green moss plants, what are we seeing—the gametophyte or the sporophyte? In a flowering plant species, would the equivalent stage be the plant or the pollen grains and megagametophytes?
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.(-
Chapter 31 Solutions
Biology
Ch. 31.1 - Prob. 1CCCh. 31.2 - Why did giant dragonflies exist during the...Ch. 31.3 - Prob. 1CCCh. 31.4 - What were the goals of the Browning and Gunning...Ch. 31.4 - Prob. 2EQCh. 31.4 - Prob. 3EQCh. 31.5 - Core Skill: Modeling The goal of this modeling...Ch. 31.5 - Prob. 1CCCh. 31.5 - Core Skill: Connections Look ahead to Figure...Ch. 31.5 - Prob. 2CC
Ch. 31 - The simplest and most ancient phylum of modern...Ch. 31 - Prob. 2TYCh. 31 - A seedless plant phylum that is included in the...Ch. 31 - Prob. 4TYCh. 31 - The seed plants are also known as a. bryophytes....Ch. 31 - Prob. 6TYCh. 31 - Prob. 7TYCh. 31 - Prob. 8TYCh. 31 - Prob. 9TYCh. 31 - Prob. 10TYCh. 31 - List several common traits that lead evolutionary...Ch. 31 - Prob. 2CQCh. 31 - Prob. 3CQCh. 31 - Prob. 1COQCh. 31 - Prob. 2COQ
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- How are bryophytes (the three groups of nonvascular plants) able to survive on land?arrow_forwardCould Bryophytes, even though they lack vascular plant components (xylem and phloem), ever manage to achieve tree sizes?arrow_forwardWhy are bryophytes considered as primary source of water?arrow_forward
- What traits do bryophytes and tracheophytes have in common? Check all that you think apply.A) they both undergo alternation of generationsB) they both have chlorophylls a and b.C) they both have an asexual life cycle stage.D) they both have multicellular gametangiaE) they both have apical meristemsarrow_forwardwhy are bryophytes considered natural and non naturalarrow_forwardWhat is the dominant phase in the life cycle of a Pterophyte? Is it haploid or diploid? dentify the structure pictured below.arrow_forward
- Match the following clades with the characteristics that they share Clades: Bryophytes and Tracheophyta Embryophyta and Charophycea Chlorophyta and Streptophyta Bryophytes and Tracheophyta Characteristics: -Chlorophylls a and b are autotrophic -Alternation of generations -Rosettes in the plasma membrane -Sporangia with walled sporesarrow_forwardCompare and contrast the three bryophyte groups in terms of distinguishing morphoanatomical features, reproduction, diversity and habitat. Bryophyte Group Criteria Hornworts Liverworts Mosses Gametophyte Morphology Dioicous/Monoicous* Asexual Reproduction Presence of conducting cells Photosynthetic Parts Presence of Stomata Presence of Cuticle Sporophyte Morphology/Appearance Other Distinct Features/Structures Habitat/Distribution No. of Species Worldwide Summary of Key Similarities Summary of Key Differencesarrow_forwardCompare and contrast the three phyla of bryophytes using the specified bases in the Table below. Bases Hepatophyta Anthocerotophyta Bryophyta 1. Growth form (leafy or thallose) 2. Arrangement of leaves on the stem for leafy types 3. Mechanism of spore dispersal 4. Presence of stomata on the sporophytes 5. Presence of primitive conducting cells 6. Presence of chloroplast on the sporophyte 7. Structure of the protonema 8. Presence of symbiotic cyanobacteria 9. Length of the setaarrow_forward
- Name two genera of living lycophytes. What are their common names? About how big do theyget? Are they leafy or do they have naked stems?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_forwardWhat is the lasting form inpteridophytes, thegametophyte or thesporophyte? How can it becompared to bryophytes?arrow_forward
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