Concept explainers
Videos
Recent DNA evidence suggests to some plants taxonomists that the traditional way of classifying flowering plants is not correct, and that flowering plants need to be completely reclassified.
Other botanists disagree, saying it would be chaotic and unwise to disregard the historical classification groups. Argue for and against keeping traditional classification schemes.
To argue:
In the favor and against keeping traditional classification schemes that the traditional way of classifying flowering plants is not correct and botanists disagree by saying that it would be chaotic.
Introduction:
A systematic or refined approach is required for the classification of organisms with the growing data from sources. A new system of classification is required as evolution is not always unidirectional and it is complicated process. Few botanists claim that traditional system is not correct and needed to be reclassified is on the basis of DNA as DNA based classification removes gaps in the system that was followed (traditional).
Explanation of Solution
The traditional system of classification is used and well accepted for several years so it would be unwise to completely change it and a sudden introduction of new system will create chaos and vast amount of activity by scientists will be required globally. It would be almost impossible to match the records that already exist and interpret the same with the modern method in short period of time.
The best way would be gradually refining and continue use of certain essential concepts of traditional system such as “binomial nomenclature”. This approach will modernize the system of classification and it will also be accepted globally with least amount of confusion over the terminologies and methods.
The best way for the concerned issue would be gradual change in the classification system.
Want to see more full solutions like this?
- Now you will practice identifying the phylogenetic tree that corresponds to a given character table. The following table shows three key events in the evolution of plants: the development of vascular tissue, the development of flowers, and the development of seeds. Plant groups Vascular Tissue Flowers Seeds Gymnosperms 1 0 1 Mosses 0 0 0 Ferns 1 0 0 Angiosperms 1 1 1 Select the phylogenetic tree that correctly represents the data in the character table.arrow_forwardCreate a hypothetical phylogenetic tree using 11 plant species listed below. Chara, Nitella, Marchantia, Polytrichum, Equistem, Psilotum, Polypodium, Pinus, Zamia, Arabidopsis, and Lilium. Divide the species into five specific groups (Charophytes, Bryophytes, Monolithophytes, Gymnosperms, and Angiosperms) which will be the clades of your phylogenetic tree.arrow_forwardFor this plant with binomial name Ixora coccinea L., Who is the author of the specific epithet, if different from the author of the valid binomial name? What is the reference to the publication of the specific epithet if different from the place of publication of the valid binomial name? What traditional and non-traditional sources of data are used for this taxon? Have there been comprehensive monographs published for this taxon? On the basis of the information you have accumulated so far, is your taxon’s current name (names if family level) still valid?arrow_forward
- Describe the orders Sapindales, Ericales and Give the characteristics based on the characters given in the first column of Table 1. Table 1. Key characteristics of the orders Sapindales, Ericales and Gentianales Character Sapindales Ericales Gentianales 1. Plant habit 2. Plant type (monoecious, or dioecious, etc.) 3. Leaf type 4. Leaf shape 5. Flower characteristic 6. Fruit morphology 7. Seed size/shape 8. Special seed characteristic (if any) 9. Other characteristics (aromatic, etc.)arrow_forwardA botanist is studying the phylogenetic relationships of plants using only their their morphological traits. Would specialized plants (like desert or rainforest plants) complicate this process, why or why not? Select all that apply Select all that apply: a. Yes; they often appear similar but are not closely related to each other Ob. Yes; their traits are similar to plants across many environments c. No; their traits are shared by a common ancestor Od. Yes; they gained different traits than their close relatives because of their environment cross out cross out cross out cross outarrow_forwardThe work of plant taxonomists of the 20th century who identified /established the different families of flowering plants based mainly on morphological and anatomical details is still valued and being used today, despite the general acceptance of the Angiosperm Phylogeny Group (APG) as a classification system for the flowering plants. Why is it so?arrow_forward
- Give a brief coverage about molecular systematics and indicate it’s importance in the development of new cultivarsarrow_forwardWhen classifying plants which of the following replaces the phylum taxon?arrow_forwardMatch the following taxa and descriptions to their corresponding and appropriate group or classification. Match each item to a choice: Also known as the Maidenhair Tree Family The leaves are palm-like, however, they are not related with the True Palms The Araucaria Family The pollen cones would bear leaf-life structures called microsporophylls while the seed cones would bear megasporophylls. The Yew Family The Cypress Family One of the most ancient plants that served as food for non-flying dinosaurs. The Pine Family This gymnosperm is a dioecious plant with fan-shaped leaves The Podocarp Family Choices: : Ginkgoaceae Сусadaceae : Ginkgoaceae Сусadaceae : Cycadaceae :: Тахасеае : Cupressaceae :: :::arrow_forward
- 1) For each of the organisms in the following table, complete the empty columns with an appropriate answer for each taxa. Organism Gymnosperm Angiosperm Sister Taxa Derived Trait Ancestral Trait Mode of Reproductionarrow_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_forwardDefine the unified species concept. How is it applied to plants?arrow_forward
Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning