Biology: Life on Earth
10th Edition
ISBN: 9780321729712
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: Benjamin Cummings
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Chapter 21, Problem 4RQ
Summary Introduction
To review:
The algal group, from which the plants are supposed to be evolved and the evidence found to support this hypothesis.
Introduction:
The plants are the multicellular eukaryotes, which belong to the kingdom Plantae. They are supposed to be evolved from the algal groups. The green algae are found to be the possible ancestors of the plants.
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The algal group from which green plants have probably arise, also show evidence that suggests this
hypothesis.
Which of the plants shows adaptations that make it better able to survive on the land? Explain.
Name the green algal group from which plants are hypothesized to have descended and describe supporting evidence.
Chapter 21 Solutions
Biology: Life on Earth
Ch. 21 - 1. Scientists hypothesize that the ancestors of...Ch. 21 - Plant adaptations to life on land include a(n)...Ch. 21 - 3. Seedless vascular plants must reproduce when...Ch. 21 - 4. Three groups of nonvascular plants are _______,...Ch. 21 - 1. What is meant by “alternation of generations”?...Ch. 21 - 2. Explain the evolutionary changes in plant...Ch. 21 - Describe evolutionary trends in the life cycles of...Ch. 21 - Prob. 4RQCh. 21 - List the structural adaptations necessary for the...Ch. 21 - The number of species of flowering plants is...
Ch. 21 - List the adaptations of gymnosperms that have...Ch. 21 - What is a pollen grain? What role has it played in...Ch. 21 - The majority of all plants are seed plants. What...Ch. 21 - You are a geneticist working for a firm that...Ch. 21 - 1. Prior to the development of synthetic drugs,...Ch. 21 - 2. Only a few hundred of the more than 200,000...
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- Green algae are believed to be the ancestors of the bryophyte. Cite four distinct lines of evidence to support this belief.arrow_forwardWhy are fungi important decomposers? a. They produce many spores. b. They can grow in many different environments. c. They produce mycelia. d. They recycle carbon and inorganic minerals by the process of decomposition.arrow_forwardUse the fern life cycle to answer the following questions in detail and explain: a. Are spores produced by meiosis or mitosis? b. Are spores haploid or diploid? c. Is a small prothallus a gametophyte or sporophyte?arrow_forward
- How are a fungus's hyphae, mycelium, and septa related? A. The hyphae is a network of branched mycelium. Individual mycelia are separated by cross walls called septa. B. The mycelium is a network of branched septa. Individual septa are separated by cross walls called hyphae. C. The mycelium is a network of branched hyphae. Individual hyphae are separated by cross walls called septa. D. The septa is a network of branched hyphae. Individual hyphae are separated by cross walls called mycelium.arrow_forwardBased on the diagram, how many unique ascospores are produced in each ascus resulting from the cross fertilization of two Ascomycetes fungi? A. 1 B. 2 C. 4 D. 8 Photo attatchedarrow_forwardAnswer what is the cell shape, what type of plastid is present, and what are the pigments present in Cucurbita maxima only (in detail)arrow_forward
- Which statement about bryophytes is not correct? A. They lack xylem and phloem B. The dominant phase of their life cycle is diploid C. They are the first land plants D. Sperm can be aided in their travel to the egg by insects E. They have cells with 9+2 flagellaarrow_forwardWhich algal group is most closely related to plants?a. diatomsb. Chlorophytac. Euglenophytad. dinoflagellatesarrow_forwardDiscus the important finding which could be obtained from a linear tetrad analysis in fungi validate your answer by diagrammatic representationarrow_forward
- The Kingdom Protista is initially divided into two groups based on whether the organism in question is capable of photosynthesis.arrow_forward"Like plants, fungi can make their own food using photosynthesis." Please explain in detail why this is false and a misconception.arrow_forwardDoes the rhizome have leaves?arrow_forward
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