Textbook Question
In angiosperms, are sperm and eggs produced by mitosis or meiosis?
Which cells are spores?
Which structures are gametophytes?
Ch. 38 - Flowering Plant Reproduction and Development
Freeman8th EditionBiological ScienceISBN: 9780138276263
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Table of contents
- Ch. 1 - Biology: The Study of Life13
- Ch. 2 - Water and Carbon: The Chemical Basis of Life14
- Ch.3 - Protein Structure and Function10
- Ch.4 - Nucleic Acids and the RNA World10
- Ch. 5 - An Introduction to Carbohydrates10
- Ch. 6 - Lipids, Membranes, and the First Cells11
- Ch. 7 - Inside the Cell10
- Ch. 8 - Energy and Enzymes: An Introduction to Metabolism10
- Ch. 9 - Cellular Respiration and Fermentation11
- Ch. 10 - Photosynthesis12
- Ch. 11 - Cell-Cell Interactions12
- Ch. 12 - The Cell Cycle8
- Ch. 13 - Meiosis12
- Ch. 14 - Mendel and the Gene23
- Ch. 15 - DNA and the Gene: Synthesis and Repair15
- Ch. 16 - How Genes Work16
- Ch. 17 - Transcription, RNA Processing, and Translation16
- Ch. 18 - Control of Gene Expression in Bacteria16
- Ch. 19 - Control of Gene Expression in Eukaryotes12
- Ch. 20 - The Molecular Revolution: Biotechnology, Genomics, and New Frontiers15
- Ch. 21 - Genes, Development, and Evolution12
- Ch. 22 - Evolution by Natural Selection16
- Ch. 23 - Evolutionary Processes13
- Ch. 24 - Speciation15
- Ch. 25 - Phylogenies and the History of Life13
- Ch. 26 - Bacteria and Archaea15
- Ch. 27 - Diversification of Eukaryotes16
- Ch. 28 - Green Algae and Land Plants16
- Ch. 29 - Fungi18
- Ch. 30 - An Introduction to Animals9
- Ch. 31 - Protostome Animals15
- Ch. 32 - Deuterostome Animals17
- Ch. 33 - Viruses16
- Ch. 34 - Plant Form and Function16
- Ch. 35 - Water and Sugar Transport in Plants16
- Ch. 36 - Plant Nutrition13
- Ch. 37 - Plant Sensory Systems, Signals, and Responses16
- Ch. 38 - Flowering Plant Reproduction and Development16
- Ch. 39 - Animal Form and Function17
- Ch. 40 - Water and Electrolyte Balance in Animals16
- Ch. 41 - Animal Nutrition16
- Ch. 42 - Gas Exchange and Circulation16
- Ch. 43 - Animal Nervous Systems16
- Ch. 44 - Animal Sensory Systems16
- Ch. 45 - Animal Movement11
- Ch. 46 - Chemical Signals in Animals16
- Ch. 47 - Animal Reproduction and Development16
- Ch. 48 - The Immune System in Animals16
- Ch. 49 - An Introduction to Ecology15
- Ch. 50 - Behavioral Ecology16
- Ch. 51 - Population Ecology16
- Ch. 52 - Community Ecology20
- Ch. 53 - Ecosystems and Global Ecology17
- Ch. 54 - Biodiversity and Conservation Ecology18
Chapter 38, Problem 5
Why is the emergence of the radicle an important first step in germination?
a. Its hook helps protect the shoot that emerges later.
b. It carries out photosynthesis to supply the embryo with food.
c. It is important for establishing a supply of water to the growing embryo.
d. It is necessary to break the seed coat.
Verified step by step guidance1
Understand the role of the radicle in seed germination: The radicle is the embryonic root of the plant and is the first part to emerge during germination.
Consider the function of the radicle: The radicle's primary function is to anchor the plant and absorb water and nutrients from the soil, which are crucial for the growth of the embryo.
Evaluate the options given: Analyze each option to determine which one accurately describes the importance of the radicle in germination.
Option a: The hook protecting the shoot is not directly related to the radicle's emergence.
Option b: Photosynthesis is not carried out by the radicle; it is primarily involved in water absorption. Option c: Establishing a supply of water is indeed a key function of the radicle. Option d: Breaking the seed coat is necessary for germination, but the radicle itself is not responsible for this action.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Radicle
The radicle is the first part of a seedling to emerge from the seed during germination. It develops into the primary root, anchoring the plant and absorbing water and nutrients from the soil, which are crucial for the growth and development of the embryo.
Germination
Germination is the process by which a seed develops into a new plant. It begins with the absorption of water, leading to the swelling of the seed and the breaking of the seed coat, allowing the radicle to emerge and establish the plant's initial root system.
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Germination
Seed Coat
The seed coat is the protective outer layer of a seed, safeguarding the embryo from physical damage and desiccation. During germination, the radicle's emergence is essential for breaking through this barrier, enabling the seedling to access water and nutrients necessary for growth.
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Related Practice
Textbook Question
Which of the following does not occur during embryogenesis?
a. Formation of the radial axis
b. Production of the suspensor
c. Formation of the cotyledons and hypocotyl
d. Formation of the leaf lateral and proximal–distal axes
Textbook Question
When does the apical–basal axis first become apparent?
a. When the epidermal, ground, and vascular tissues form
b. When the cotyledons, hypocotyl, and root form
c. When the first cell division produces the apical cell and basal cell
d. During the globular stage, when the suspensor is complete
Textbook Question
What are the advantages and disadvantages of self-fertilization versus those of outcrossing?
Textbook Question
In what sense are the tissues produced in the shoot and root apical meristems of a 300-year-old oak tree 'embryonic'?
Textbook Question
Human embryonic stem cells are capable of forming all types of cells in the human body. How are these cells similar to meristem cells in plants?