Loose Leaf For Integrated Principles Of Zoology
18th Edition
ISBN: 9781260411140
Author: Cleveland P Hickman Jr. Emeritus, Susan L. Keen, David J Eisenhour Professor PhD, Allan Larson, Helen I'Anson Associate Professor of Biology
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 22, Problem 1FFT
For Further Thought The phylogenetic placement of chaetognaths is very uncertain. What are the two other possible placements for this group and what would you need to know to decide on the best placement?
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Students have asked these similar questions
As 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…
I just need enlightenment at where exactly did I go wrong or lack in this cladogram. There is no issue with the blatospore, but only the Nematoda, Mollusca, Annelida, and Arthropoda. So, the problem is I don't know how to relocate Annelida since it doesn't undergo ecdysis, or I lack the knowledge to distinguish the correct pathway to arrange the four Phyla: Nematoda, Mollusca, Annelida, and Arthropoda; branching it correctly.
What is the sister group to Innovatiocaris maotianshanensis?
The phylogeny shows that some named groups are not monophyletic. For each of the following groups, state whether it is monophyletic:
Hurdia - YES OR NO
Hurdidae- YES OR NO
Lyrarapax- YES OR NO
Amplectobelua- YES OR NO
Amplectobeluidae- YES OR NO
Anomalocaris- YES OR NO
Chapter 22 Solutions
Loose Leaf For Integrated Principles Of Zoology
Ch. 22 - Prob. 1RQCh. 22 - Prob. 2RQCh. 22 - How do we know that echinoderms were derived from...Ch. 22 - Prob. 4RQCh. 22 - Prob. 5RQCh. 22 - Prob. 6RQCh. 22 - What structures are involved in the following...Ch. 22 - Prob. 8RQCh. 22 - Prob. 9RQCh. 22 - Match groups in the left column with all correct...
Ch. 22 - Define the following: pedicellariae, madreporite,...Ch. 22 - Prob. 12RQCh. 22 - Give four examples of how echinoderms are...Ch. 22 - What is a major difference in function of the...Ch. 22 - What characteristics do Hemichordata share with...Ch. 22 - Distinguish Enteropneusta from Pterobranchia.Ch. 22 - For Further Thought The phylogenetic placement of...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Molecular sequence data indicate that Xenoturbella is a deuteros-tome. Are there corresponding morphological characters?arrow_forwardKingdom: Animalia Phylum: Chordata Order: Dipnoi Suborder: Ceratodontoidei Family: Neoceratodontidae Genus: Neoceratodus Species: N. forsteri The Queensland lungfish is part of these taxa. Which species is most closely related to this species?arrow_forwardSelect clades from the list provided below to show a legitimate evolutionary path that led to the evolution of the blue-headed wrasse. The clades are listed in alphabetical order. Include all clades to which this species belongs. Ignore the clades to which this species does not belong. I started by writing the broadest two clades that apply (see below). Actinopterygii Chondrichthyes Chordata Cyclostomata Gnathostomata Osteichthyes Sarcopterygii Teleostei Tetrapoda Vertebrataarrow_forward
- Match the following groups under Phylum annelida to the following characters: Match each item to a choice: Branchiobdellida Hirudenea Acanthobdellida Oligochaeta Polychaeta Choices: : Loss of remaining setae; 34 metameres : Anterior body sucker; 15 metameres : Presence of clitellum; but without superficial annuli E Posterior body sucker; 30 metameres : Parapodia; complex headarrow_forwardHow would the phylogenetic species concept resolve the controversy over how many species exist in Ensatina eschscholtzii?arrow_forwardMake a phylogenetic tree just including the following= phylum nematoda (enoplea and chromadorea) phylum nematomorpha Phylum Priapulida Phylum Kinorhyncha Phylum Loricifera Phylum Tardigrada Phylum Onychophora Phylum arthropoda -include subphylums and classesarrow_forward
- Download a phylogenetic tree of Bilateria that includes the ten phyla of bilaterian discussed in this module. From the tree, be able to identify whether members of the phylum are coelomates (C), pseudocoelomates (P), or acoelomates (A). Use your labeled tree to answer the following questions: a) For each of the three major clades of bilaterian, what can be inferred about whether the common ancestor of the clade had a true coelom? b) To what extent has the presence of a true coelom in animals changed over the course of evolution?arrow_forwardA) 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_forwardDraw a cladogram for the animals: Amphioxus; Lamprey; an osteostracan( derived ostracoderm); Reef shark;African lungfish and cichlid ( teleost fish) and label the cladogram with the following clades and characters Clade:Chordata; Vertebrata; Gnathostomata; Chondrichthyes 5. Osteichthyes (bony fishes); Sarcopterygii (lobe-finned fishes) and Actinopterygii (ray-finned fishes) Characters: Notochord; Muscular pharynx; Dermal bone; Pectoral fins • Jaw; Pelvic fins; Endochondral bone; Lobed fins and 7 clusters of Hox genesarrow_forward
- Why is it difficult to determine the phylogeneticplacement of Nanoarchaeota and Korarchaeota?arrow_forwardWhich of the following is true about the phylogeny of birds and reptiles. Question 35 options: a) Birds are more closely related to amphibians then they are to reptiles. b) Birds are a type of reptile, but are not related to dinosaurs. c) Birds and reptiles are the least related vertebrates. d) Birds are a type of reptile and are descended from a group of dinosaurs.arrow_forward45.0manitherium is consistently placed close to late Oligocene Barytherium in our phylogenetic analyse. Select one : True Falsearrow_forward
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