Concept explainers
To determine: The importance of phylogeny in deducing the novel medicines from seed plants.
Concept introduction: Phylogeny depicts the evolutionary relationship among a group of organisms. It describes how a group of organisms evolved with the time. The relationship among a group of organisms is depicted through a phylogenetic tree. The phylogeny can be deduced using either the DNA sequence or morphology.
There are various terms used in study of phylogenetic tree namely monophyletic, paraphyletic and polyphyletic. The monophyletic taxon refers to a clade that contains all the descendants of a common ancestor. A paraphyletic clade contains descendants from a common ancestor but not all the descendents. On the other hand, the polyphyletic is a clade that contains descendants from more than one common ancestor.
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Campbell Biology (10th Edition)
- What can scientists analyze to get a better understanding of how plants and animals evolved a common ancestor? (1arrow_forwardKnow/understand the following concepts: be sure to provide examples of each concept 1.Evolution of Land Plants 2.Alternation of Generations (Generic) 3.Life Cycle of Mosses and their relatives 4.Life Cycle of Ferns and their relatives 5.Double Fertilization (know how it works)arrow_forwardClausen and colleagues proposed two hypotheses to explainthis variation within a species: (1) There are genetic differencesbetween populations of plants found at different elevations.(2) The species has developmental flexibility and can assumetall or short growth forms, depending on local abiotic factors.If you had seeds from yarrow plants found at low and highelevations, how would you test these hypotheses?arrow_forward
- Which of the following evidences would BEST determine whether two plant species share a recent common ancestor? Group of answer choices seed development fossil record DNA sequences habitat distributionarrow_forwardTest Your Understanding Know and Comprehend 6. There are at least _______________ species of flowering plants worldwide. (a) 300 (b) 3000 (c) 30,000 (d) 300,000 (e) 3,000,000arrow_forwardWhat is the correct order of appearance in the fossil record, starting with the earliest: flowering plants, ferns, gymnosperms?arrow_forward
- Explain how arborscent lycopods and horsetails are to vascular plant evolution what dinosaurs are to vertebrate evolution.arrow_forwardDraw a phylogenetic tree illustrating our current understanding ofplant phylogeny; label the common ancestor of plants and the originsof multicellular gametangia, vascular tissue, and seeds.arrow_forward. WHAT IF? If flowers had shorter styles, pollen tubeswould more easily reach the embryo sac. Suggest anexplanation for why very long styles have evolved inmost flowering plants.arrow_forward
- Plants made the leap from water to land during the late Ordovician period (we think). In order to make it, various physical obstacles had to be overcome. Choose one adaptation and explore it further. What evidence do we have of this change? Are there specific fossils of plants that exhibit it? How do we think it may have developed? Not all of these changes occurred at the exact same time. Was your chosen adaptation one of the first or late to the game? including references are appreciated.arrow_forwardGive all evidence that chara and green plants share a recent common ancestor (all shared derived characteristics).arrow_forwardEVOLUTION CONNECTION Discuss how the distribution of aspecies can be affected both by its evolutionary history and byecological factors. Could ongoing evolutionary change alsoaffect its distribution? Explainarrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning