Concept explainers
To discuss:
About six plant families, weather they form monophyletic, paraphyletic, or polyphyletic group and also check that extrafloral nectries is an ancestral or a derived character in each of six families.
Concept introduction:
Paraphyletic group is the group of organism that includes an ancestor, but not all of its descendants. Polyphyletic group is a group of organism or other evolving organism that has been grouped together, but does not share an immediate common ancestor.
Monophyletic group is the group of organism that includes an ancestor and all of its descendants.
Extrafloral nectaries nectar is a sugar rich liquid produced by plant in glands called nectaries within the flower, which attracts pollinating animals.
Want to see the full answer?
Check out a sample textbook solutionChapter 14 Solutions
BIOLOGY:CONCEPTS &...(LL) W/ACCESS +LM
- Do most botanists believe that the flowering plants are monophyletic, or do they believe that they are actually an unnatural group consisting of several lines of evolution that do not share a common ancestor?arrow_forwardAll plant families have a name that ends in “-aceae,” and some families also have old names, still commonly used, without this ending. The palms are a family with two names. What is the new name that ends in “-aceae,” and what is the older name? What kind of a compound leaf do the feather palms have? The fan palms? Why are palm flowers so seldom seen by most people?arrow_forwardThis figure identifies lineages as plants, non-vascular plants, vascular plants, seedless vascular plants, and seed plants. Which of these categories are paraphyletic and which are monophyletic?arrow_forward
- how is the rasberry is related to strawberry, banana and grape in a clade?arrow_forwardHow are these plants different from a typical plant stem? What are the gross morphologican and external features of these plants?arrow_forwardIn some species, sepals look like petals, and both are collectively called “tepals.” Suggest an extension to the ABC hypothesis that could account for tepals.arrow_forward
- In some species, such as magnolia, sepals look like petals, and both are collectively called "tepals:' Suggest an extension to the ABC model that could hypothetically account for the origin of tepals.arrow_forwardIf the stomata of bryophytes and of vascular plants are not an example of convergent evolution, what is an alternative explanation for their appearance in these groups?arrow_forwardCucumbers and melons are both members of the genus Cucumis, which includes members with distinct geographical origins: the Asiatic group and the African group. The African members of the genus possess disease resistance not found among the Asiatic members of the same genus, and scientists were interested in creating melon-cucumber hybrids that would possess enhanced resistance to mildew and plant viruses. Plant breeders have nicknamed this new fruit, the “melumber”, but its scientific name is Cucumis hytivus. Please fill in the table attached and answer the following questions. a.) Assuming that the Hoosier cucumber was produced in a laboratory at Indiana University, briefly describe the most likely method by which it was produced and the biological mechanism involved in the action of the agent utilized by the scientists. b.) Suppose scientists wanted to employ an alternative approach to producing cucumber plants that were resistant to the cucumber mosaic virus. List the steps…arrow_forward
- Cucumbers and melons are both members of the genus Cucumis, which includes members with distinct geographical origins: the Asiatic group and the African group. The African members of the genus possess disease resistance not found among the Asiatic members of the same genus, and scientists were interested in creating melon-cucumber hybrids that would possess enhanced resistance to mildew and plant viruses. Plant breeders have nicknamed this new fruit, the “melumber”, but its scientific name is Cucumis hytivus. Please fill in the table attached and answer the following questions. a.) Assuming that the Hoosier cucumber was produced in a laboratory, briefly describe the most likely method by which it was produced and the biological mechanism involved in the action of the agent utilized by the scientists. b.) Suppose scientists wanted to employ an alternative approach to producing cucumber plants that were resistant to the cucumber mosaic virus. List the steps involved in producing…arrow_forwardDo 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?arrow_forwardPhylogenetic trees are used to show the evolutionary relationships among various biological species and are usually based upon shared derived characters. In constructing phylogenetic trees, it is useful to first draw up a character table to show the presence or absence of characters among the various groups of organisms being studied. a. Draw up a character table based upon the following shared derived characters of land plants: flowers, seeds, vascular tissues, and dependent embryos. Your character table must include the names/descriptions of the plant groups that are being characterized. b. Construct a phylogenetic tree based on this data.arrow_forward
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education