Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
12th Edition
ISBN: 9780135755785
Author: Gerald Audesirk, Teresa Audesirk
Publisher: PEARSON+
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Chapter 19, Problem 3AC
Consider the following list of groups: (1) protists, (2)
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https://drive.google.com/drive/folders/1zSPga7hIHIL0ewoY7KJGv3FPaSHzWit6?usp=sharing
Click the link to access the Dichotomous Key, What we need is the Phylum or Subphylum and Class of the following species. Indicate also the Reference key used based on the key
Protists are(a) single-celled eukaryotes.(b) multicellular eukaryotes.(c) single-celled prokaryotes.(d) single-celled akaryote.
Please try to break the solutions into as many steps as practically possible and the steps should come one by one and they should be short and crisp and plagiarism-free.
Which of the following is correct regarding multicellularity?
a) All protists are unicellular organisms
b) Colonies of bacteria are considered multicellular organisms
c) It arises from endosymbiosis
d) In animals, multicellularity involved the evolution of a new sequence domain
in proteins called cadherins that allow cells to attach to one another
e) Multicellularity evolved only once in all eukaryotes
Chapter 19 Solutions
Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
Ch. 19.1 - Analysis of human chromosome 2 revealed that it...Ch. 19.1 - Origin of a Killer Analysis of nucleotide...Ch. 19.1 - explain why scientific names are necessary?Ch. 19.1 - describe the type of similarities that...Ch. 19.1 - Prob. 3CYLCh. 19.2 - Prob. 1TCCh. 19.2 - Prob. 1CYLCh. 19.2 - explain how scientists discovered that prokaryotes...Ch. 19.3 - Prob. 1HYEWCh. 19.3 - Prob. 1CYL
Ch. 19.3 - Prob. 2CYLCh. 19.4 - Prob. 1CYLCh. 19.4 - Prob. 2CYLCh. 19.4 - Prob. 1CTCh. 19 - Prob. 1MCCh. 19 - To be informative for reconstructing the phylogeny...Ch. 19 - Prob. 3MCCh. 19 - In modern systematics, classifications are...Ch. 19 - Which of the following includes all the domains...Ch. 19 - Prob. 1FIBCh. 19 - Prob. 2FIBCh. 19 - In Linnaean classification, the eight major...Ch. 19 - Systematists determine the evolutionary...Ch. 19 - Prob. 5FIBCh. 19 - The number of named species is about ________, but...Ch. 19 - What contributions did Linnaeus and Darwin make to...Ch. 19 - Prob. 2RQCh. 19 - What techniques might you use to determine whether...Ch. 19 - Only a small fraction of the total number of...Ch. 19 - In England, daddy longlegs refers to a long-legged...Ch. 19 - Why are species designations of asexually...Ch. 19 - Applying the Concepts The pressures created by...Ch. 19 - Applying the Concepts 2. During major floods, only...Ch. 19 - Consider the following list of groups: (1)...
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- Which of the following taxa are monophyletic, polyphyletic, and paraphyletic?arrow_forwardTaxonomy refers to the science of classification of living organisms. The five Kingdom Classification system was widely used from 1920 to 1980. Explain why this classification system was abandoned in favor of the 3-domain system.arrow_forwardWhich of the following is FALSE regarding phylogenetic trees? 1) The branch lengths on the tree are scaled to molecular (DNA) changes and/or time. 2)Phylogenetic trees have shown us that there is much more bacterial diversity compared to eukaryotes. 3) Phylogenetic trees show the evolutionary relatedness of different organisms. 4). The branch lengths on the tree depict abiotic and biotic factors affecting speciation.arrow_forward
- The number of possible trees resulting from phylogenetic analysis grows exponentially with the number taxa, such that in a 22 taxon analysis there are more possible unrooted trees than there are stars in the universe. A) True B) False C) It depends on the inference method and optimality criteria used. D) Number of taxa and number of unrooted tree possibilities are unrelated in phylogenetic analysis.arrow_forwardMicroscopic Images Examine the microscopic images of protists below. Note cell shapes, organelles, intracellular structures, locomotory structures and other distinguishing features. The species or taxonomic names are located under each photo. (a) (b) (c) (d) (0) Multicellular algae (top row A-C, left to right) and unicellular algae (D-F): A. Brown kelp (seaweed) Macrocystis B. Red algae Corallina C. Green algae Halimeda incrassata D. Bioluminescence (blue color) from dinoflagellates (flagellated unicellular algae). E. Diatoms (shelled unicellular algae) F. Colonial green algae Volvox (bottom row)arrow_forwardWhich of the following statements about fungi is FALSE? O 1) They may cause human disease. O 2) fungi are photosynthetic. O3) fungi are eukaryotes. O 4) Fungi include yeasts and molds. O 5) Some fungi are unicellular.arrow_forward
- . Based on the cladogram provided below, cite the classes which may have monophyletic, paraphyletic and polyphyletic relationship on the classes of Mollusca? The required classes should be at least three (3) e.g. Polyphyletic - Polyplacophora, Monoplacophora, Gastropoda. Monophyletic Paraphyletic Polyphyletic Polyplacophora Aplacophora Monoplacophora Cephalopoda Scaphopoda Gastropoda ( 1. 2. 3. 1. 2. 3. 1. 2. 3. Bivalvia 4.arrow_forwardPlease create a phylogenetic (evolutionary) tree given this criteria and follow all points! There are three domains of life - Bacteria, Archaea, and Eukarya. Start by drawing these three main branches. Then add branches for plants, animals, fungi, and protists. When adding all these branches, don't just add them randomly. The branching pattern reflects evolutionary relationships. You should use the relationships/branching patterns. Then add additional branches for • three species of bacteria • three species of archaea three species of plants three species of animals • three species of fungi • three species of protists (single-celled eukaryotes) You can pick any species you want. For each species, be sure to add 1 synapomorphy (shared derived character) that defines the species or group. • Finally, label the tree with all the terms (parts of a tree, not phylogenetic groups) when describing a phylogenetic tree.arrow_forwardWhich of these is an example of inductive reasoning? A) Hundreds of individuals of a species have been observed and all are photosynthetic; therefore, the species is photosynthetic. B) These organisms live in sunny regions. Therefore, they are using photosynthesis. C) If protists are all single-celled, then they are incapable of aggregating. D) If two species are members of the same genus, they are more alike than each of them could be to a different genus.arrow_forward
- Modern taxonomic treatments rely heavily on phylogenetic data to classify organisms. In the past, taxonomists often used a morphological species concept, in which species were defined based on similarities in growth form. Give an example of how a morphological species concept would group a set of protists differently from how a phylogenetic species concept would.arrow_forward- Chrysophyta group placed under phylum chromista according to the 6 system classification. Given the above information, please explain and state the reason for placing this organism into each one of the taxon. Thank you!!arrow_forwardThe universal phylogenetic tree of life shows the divergence of Bacteria, Archaea, and Eukarya. Studies of Lokiarchaeota help to elucidate these relationships, but the first universal tree of life was constructed by Carl Woese using ribosomal RNA sequences. There are advantages to using different types of nucleic acid for different types of analyses. What is a specific advantage of using small subunit ribosomal RNA (SSU rRNA) gene sequences for phylogenetic analysis compared with DNA sequences? ▸ View Available Hint(s) SSU rRNA sequences accumulate mutations more rapidly than protein-encoding DNA. SSU rRNA is frequently transferred through horizontal gene transfer, whereas DNA sequences are not. Primers are required in DNA sequence analysis, but not for SSU rRNA sequence analysis. Although PCR products can be visualized with SSU rRNA, this is not the case with other forms of nucleic acids. DNA sequences are too highly conserved to work well for sequence analysis; individual species are…arrow_forward
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