Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 31, Problem 5TYU
Propose an explanation for why annelids and arthropods were thought to be closely related, before phylogenetic analyses in the late 1990s.
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Build a phylogenetic tree consisting of the wasp, Pimpla rufipes and four other species. Ensure that the most basal species branches out first.
Pimpla rufipesSpecies A: possess a calcium carbonate shell and is found in marine environmentsSpecies B: Segmented worm, marine and possess bristles known as ‘setae’Species C: Bioluminescent, possess special cells known as colloblasts which are attached to tentaclesSpecies D: Parasitic roundworm found in the intestines of mammals; lacks segments, molts a cuticle.
Based on the phylogenetic tree diagram in Figure 34.2, predict which vertebrate groups should have lungs or lung derivatives. Explain.
Examine the image of the relatedness of vertebrates represented in this phylogenetic tree. Which statements are correctly inferred from this tree? Select all that apply.
A) The mammals are the outgroup in this tree.
B) Birds and dinosaurs share a recent common ancestor.
C) Mammals and birds are more closely related than any other species.
D) Turtles are equally as diverged from lizards and snakes as they are from crocodiles.
E) Lizards and snakes are more recently diverged from each other than they are from crocodiles.
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Biological Science (7th Edition)
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- A) Draw a phylogenetic tree for the major phyla of the animal kingdom. Label the appropriate branch points on the tree with the following features: Tissue, radial symmetry, bilateral symmetry, body cavity, deuterostomes, and protostomes. B). Draw a diagram of a hydra. On the hydra, label the mouth (hypostome), tentacles, basal disk, ovary, budding polyp, gastrovascular cavity. State the function of each structure you labeled next to or under your diagram.arrow_forwardContrast the field of systematics with that of taxonomy and phylogenetics. How is systematics defined? How is taxonomy and phylogenetics similar or different from systematics? How did the systematic placement of Calostoma change our understanding of this taxon, in regards to the study Phylogeny of Calostoma, the gelatinous-stalked puffball, based on nuclear and mitochondrial ribosomal DNA sequences by Hughey and colleagues?arrow_forwardOn a deep sea expedition, you capture a previously undiscovered sea creature that appears to represent a new phyla. It happens to have fertilized eggs that you get to spawn. You watch its development to determine which group of animals it might belong to. You see that the mouth develops first, and it goes through several larval stages in which it molts and regrows its skeleton. Which big phylogenetic group of animals does this animal likely belong to? A. Ecdysozoa B. Lophotrochozoa C. Diploblasts D. Deuterostomesarrow_forward
- 24.) Based on the tree on the right, which statement is not correct? a) The salamander lineage is a basal taxon b) Salamanders are a sister group to the group containing lizards, goats, and humans c) Salamanders are as closely related to goats as to humans d) Lizards are more closely related to salamanders than to humans Salamander Lizard Goat Humanarrow_forwardA study inferred a maximum likelihood phylogenetic tree based on sequence data from a specific gene. Numbers represent bootstrap support values for each clade. Based on the study's findings, how certain should we be that marsupials are sister to placental mammals, rather than monotremes? What number is used to represent this certainty, and how was it calculated?arrow_forwardTuna Vertebrel column 8alamander Hinged jaws Turtle Four walking legs Amniotic egg Leopard Hair Use the phylogeny above to answer the following question. Which of the following organisms is most closely related to the salamander? O A) Leopard O B) Tuna O C) Turtle O D) The salamander is equally related to the leopard and turtle O E) The salamander is equally related to the lamprey and tunaarrow_forward
- Based on this phylogenetic tree, which organisms are the most closely related? B. bonærensis (Southern Minke Whale) B. acutorostrata (Northern Minke Whale) B. physalus (Fin Whale) B. edeni (Pygmy Bryde's Whale) B borealis (Sei Whale) B. brydei (Bryde's Whale) B. musculus (Blue Whale) Megaptera novæanglia (Humpback Whale) Eschrichtius robustus (Gray Whale) B. musculus (Blue Whale) and B. physalus (Fin Whale) B. acutostrata (Northern Minke Whale) and B. edeni (Pygmy Bryde's Whale) B. brydei (Bryde's Whale) and B. edeni (Pygmy Bryde's Whale) Megaptera novaeangliae (Humpback Whale) and Eschrichtius robustus (Gray Whale)arrow_forwardAs we have discussed in class, phylogenies are hypotheses, and can therefore change over time with new evidence. Relatively recent and strong molecular evidence (that we did not discuss in class) suggests that all members of the Subphylum Hexapoda are derived from a common ancestor within the Subphylum Crustacea, as in the cladogram shown below. Given this new information, answer the question below. Note: Don't panic. Some of the names of these groups are new to you (Copepoda, Malacostraca, and Remipedia are all classes or subclasses within the Subphylum Crustacea), but this will not affect your ability to answer this question. Myriapoda Copepoda (Crustacea) Malacostraca (Crustacea) Hexapoda Remipedia (Crustacea) If we insisted that all groups must be categorized and named so that taxonomic ranks/names always include a single common ancestor and all of its descendants, how would this new evidence change our definition of a hexapod? Hexapoda and Melacostraca would have to be classified…arrow_forwardMake a cladogram that includes the following groups of fishes: chon-drosteans, elasmobranchs, hagfishes, holocephalans, lampreys, lung-fishes, teleosts. Add the following synapomorphies to the diagram: claspers, cranium, endochondral bone, fins with stout bones, jaws, keratinized teeth.arrow_forward
- Sponges (Phylum Porifera) are the basal taxon to animals and were once thought to belong to plants. 1) Identify three characteristics that distinguish sponges from plants. 2) Identify three characteristics (present or absent) that distinguish sponges from other animal taxa.arrow_forwardcreate a cladogram summarizing the phylogenetic relationships among the different Phyla. Take note that some characters may be secondarily lost during the evolution of these different.arrow_forwardExplain how heterochrony may have been involved in the evolution of 1) pteropod gastropods, 2) the byssal threads of mussels 3) ascidians and larvaceans and 4) ascidians and vertebrates.arrow_forward
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