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 20RQ
The dominant organism in fern is the
- sperm
- spore
- gamete
- sporophyte
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In ferns, which of these would be formed by meiosis inside a sporangium?
haploid spores
diploid spores
diploid zygote
haploid sperm
Sporangia
produce gametes via meiosis
produce spores via meiosis
produce gametes via mitosis
Selected
produce spores via mitosis
Complete the following paragraph to describe the characteristics of liverworts and mosses.
antheridia
protonema
rhizoids
sexual
gemmae
roots
archegonia
fragmentation
asexual
1999
binary fission
gemmules
thalli
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Liverworts and mosses are examples of nonvascular plants. Liverworts such as
Marchantia have a smooth upper surface, and a lower surface with
that project into the soil.
The smooth upper surface of the thallus of a liverwort contains groups of cells
called
cups that can produce new plant organisms asexually.
During sexual reproduction in liverworts, flagellated sperm are produced by
and eggs are produced by
After fertilization, small
sporophytes produce windblown spores.
Typically, mosses can reproduce asexually by
almost every part of the moss plant to produce
During the life cycle of a moss, a
its structure.
This process allows
will produce upright leafy thalli along
The thalli of a moss produce antheridia and archegonia, which are involved in
reproduction.
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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- Megasporocytes will eventually produce which of the following? pollen grain sporophytes male gametophytes female gametophytesarrow_forwardThe egg and sperm producing strcutures of pteridophytes are found on the gametophyte, also called thearrow_forwardSelect all of the following that are true about the fern gametophyte. smaller than the sporophyte site of pollen production multicellular O produces gametesarrow_forward
- Label the diagram which features an illustration of a portion of the sporophyte of Selaginella with strobili, and a photomicrograph of the longitudinal section of a mature strobilus. Indicate whether each of the structure you identified is haploid (n) or diploid (2n)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_forwardGive the advantages and disadvantages of having a dominant gametophyte phase in the life cycle of the Bryophytes.arrow_forward
- The Riccia is a bryophyte because: It has multicellular sex organs with a sterile jacket and lacks vascular tissues Its sporophyte lacks differentiation and has a single- layered jacket It occurs mostly on land and has more motile sperm It has a heteromorphic alternation of generation and lacks leaves Nextarrow_forwardThe basidium of the club fungi could be correctly described as; A reproductive structure that produces diploid spores A sexual reproductive structure that produces 4 haploid spores An asexual reproductive structure that produces thousands of spores A sexually reproductive structure that produces 8 haploid sporesarrow_forwardWhich of the following is not the main characteristics of Liverworts. Choose 3 The columella is absent in the capsule Pseudolaters are present in the capsule gametophyte plant is either thalloid or foliose dehiscence of the capsule takes place by separation of the lid each cell has one chloroplast with a pyrenoidarrow_forward
- Identify the Bryophyte and if it is in its haploid or diploid reproductive state. A hornwort Haploid B Moss Haploid CLiverwort Haploidarrow_forwardDraw the life cycle of a typica bryophyte such as moss. Your drawing should contain the following terms: 2N and N, Sporophyte and Gametophyte, Sporangium, Meiosis, Spores, Protonema, Antheridium, Sperm, Archegonium, Egg and Fertilizationarrow_forwardDescribe the similarities in sexual reproduction of moss and fern.arrow_forward
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