Textbook Question
In plants, which of the following are produced by meiosis?
a. Haploid gametes
b. Diploid gametes
c. Haploid spores
d. Diploid spores
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Ch. 29 - Plant Diversity I: How Plants Colonized Land
Urry11th EditionCampbell BiologyISBN: 9789357423311
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Table of contents
- Ch. 1 - Evolution, the Themes of Biology, and Scientific Inquiry8
- Ch. 2 - The Chemical Context of Life8
- Ch. 3 - Water and Life6
- Ch. 4 - Carbon and the Molecular Diversity of Life9
- Ch. 5 - The Structure and Function of Large Biological Molecules9
- Ch. 6 - A Tour of the Cell6
- Ch. 7 - Membrane Structure and Function6
- Ch. 8 - An Introduction to Metabolism6
- Ch. 9 - Cellular Respiration and Fermentation10
- Ch. 10 - Photosynthesis7
- Ch. 11 - Cell Communication7
- Ch. 12 - The Cell Cycle10
- Ch. 13 - Meiosis and Sexual Life Cycles10
- Ch. 14 - Mendel and the Gene Idea14
- Ch, 15 - The Chromosomal Basis of Inheritance7
- Ch. 16 - The Molecular Basis of Inheritance9
- Ch. 17 - Gene Expression: From Gene to Protein9
- Ch. 18 - Regulation of Gene Expression10
- Ch. 19 - Viruses6
- Ch. 20 - DNA Tools and Biotechnology8
- Ch. 21 - Genomes and Their Evolution8
- Ch. 22 - Descent with Modification: A Darwininan View of Life6
- Ch. 23 - The Evolution of Populations5
- Ch. 24 - The Origin of Species6
- Ch. 25 - The History of Life on Earth6
- Ch. 26 - Phylogeny and the Tree of Life7
- Ch. 27 - Bacteria and Archaea8
- Ch. 28 - Protists7
- Ch. 29 - Plant Diversity I: How Plants Colonized Land7
- Ch. 30 - Plant Diversity II: The Evolution of Seed Plants7
- Ch. 31 - Fungi5
- Ch. 32 - An Overview of Animal Diversity4
- Ch. 33 - An introduction to Invertebrates6
- Ch. 34 - The Origin and Evolution of Vertebrates7
- Ch. 35 - Vascular Plant Structure, Growth, and Development8
- Ch. 36 - Resource Acquisition and Transport in Vascular Plants8
- Ch. 37 - Soil and Plant Nutrition10
- Ch. 38 - Angiosperm Reproduction and Biotechnology8
- Ch. 39 - Plant Responses to Internal and External Signals8
- Ch. 40 - Basic Principles of Animal Form and Function8
- Ch. 41 - Animal Nutrition7
- Ch. 42 - Circulation and Gas Exchange7
- Ch. 43 - The Immune System6
- Ch. 44 - Osmoregulation and Excretion6
- Ch. 45 - Hormones and the Endocrine System8
- Ch. 46 - Animal Reproduction8
- Ch. 47 - Animal Development8
- Ch. 48 - Neurons, Synapses, and Signaling6
- Ch. 49 - Nervous Systems8
- Ch. 50 - Sensory and Motor Mechanisms5
- Ch. 51 Animal Behavior6
- Ch. 52 - An Introduction to Ecology and the Biosphere7
- Ch. 53 - Population Ecology10
- Ch. 54 - Community Ecology9
- Ch. 55 - Ecosystems and Restoration Ecology8
- Ch. 56 - Conservation Biology and Global Change6
Chapter 29, Problem 6
Identify each of the following structures as haploid or diploid.
a. Sporophyte
b. Spore
c. Gametophyte
d. Zygote
Verified step by step guidance1
Understand the definitions: Haploid cells contain one set of chromosomes (n), while diploid cells contain two sets of chromosomes (2n).
Identify the sporophyte: In the life cycle of plants, the sporophyte is the diploid phase that produces spores through meiosis.
Identify the spore: Spores are haploid cells produced by the sporophyte that can develop into a gametophyte.
Identify the gametophyte: The gametophyte is the haploid phase that produces gametes through mitosis.
Identify the zygote: The zygote is formed when two gametes fuse during fertilization, resulting in a diploid cell.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Haploid vs Diploid
Haploid cells contain one complete set of chromosomes, denoted as 'n', while diploid cells have two sets, denoted as '2n'. In the life cycle of plants, haploid cells are involved in gamete formation, whereas diploid cells are involved in growth and development. Understanding these terms is crucial for identifying the ploidy level of different plant structures.
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Haploid vs. Diploid Cells
Plant Life Cycle
The plant life cycle alternates between two generations: the haploid gametophyte and the diploid sporophyte. The gametophyte produces gametes through mitosis, while the sporophyte arises from the fusion of gametes, forming a zygote. This alternation of generations is fundamental to understanding the roles and ploidy of plant structures like sporophytes and gametophytes.
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01:04Protist Life Cycles
Sporophyte and Gametophyte
Sporophytes are the diploid phase in the plant life cycle, responsible for producing spores through meiosis. Gametophytes are the haploid phase, generating gametes through mitosis. Recognizing the ploidy of these structures helps in identifying their roles in reproduction and development within the plant life cycle.
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06:08Seedless Vascular Plants
Related Practice
Textbook Question
Microphylls are found in which plant group?
a. Lycophytes
b. Liverworts
c. Ferns
d. Hornworts
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Textbook Question
Suppose an efficient conducting system evolved in a moss that could transport water and other materials as high as a tall tree. Which of the following statements about 'trees' of such a species would not be true?
a. Spore dispersal distances would probably increase.
b. Females could produce only one archegonium.
c. Unless its body parts were strengthened, such a 'tree' would probably flop over.
d. Individuals would probably compete more effectively for access to light.
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Textbook Question
Draw a phylogenetic tree that represents our current understanding of evolutionary relationships between a moss, a gymnosperm, a lycophyte, and a fern. Use a charophyte alga as the outgroup. (See Figure 26.5 to review phylogenetic trees.) Label each branch point of the phylogeny with at least one derived character unique to the clade descended from the common ancestor represented by the branch point.
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