BIOLOGY -TEXT
14th Edition
ISBN: 9781260710878
Author: Mader
Publisher: RENT MCG
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Chapter 29.1, Problem 1CYP
Discuss how humans, as chordates, possess all four characteristics either as embryos or adults.
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There are two types of chordates the invertebrates and the vertebrates.
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In 1928 Walter Garstang hypothesized that tunicates resemble the ancestral stock of the vertebrates. Explain this hypothesis and evaluate its validity with recent phylogenetic, fossil, and developmental data.
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- Identify four derived characters that all chordates haveat some point during their lifearrow_forwardAn important evolutionary innovation and a major difference between the limbs of extant lobe-finned fish and extant tetrapods is: Select one: 1. The presence of lobes on the fish fins. 2. Retention of fin rays in tetrapod limbs. 3. Limbs of tetrapods have associated muscles. 4. Limbs are supported by a single basal bone in tetrapods 5. Attachment of the pelvic limbs to the vertebral column via the pelvis in tetrapods. Please explain in detail the correct options as well as the incorrect options.arrow_forwardWhich of the following is the correct classification for the following chordate animal: These animals are chordates but do not have a backbone or cranium. They have all five features of chordates into adulthood. The notochord extends into its head. Question 27 options: a) Birds b) Anura / Frogs c) Urodela / Salamanders d) Superclass Agnatha e) Monotreme f) Eutharia g) Reptiles (non avian) h) Class Chondrichthyes i) Cephalochordata j) Class Osteichthyes k) Marsupialarrow_forward
- An important evolutionary innovation and a major difference between the limbs of extant lobe-finned fish and extant tetrapods is: Select one: 1. The presence of lobes on the fish fins. 2. Retention of fin rays in tetrapod limbs. 3. Limbs of tetrapods have associated muscles. 4. Limbs are supported by a single basal bone in tetrapods 5. Attachment of the pelvic limbs to the vertebral column via the pelvis in tetrapods. Please consider providing a detailed explanation of correct as well as incorrect options.arrow_forwardIdentify the stage(s) of embryonic development in whichcross sections of all chordate embryos closely resembleone another.arrow_forwardPharyngeal slits are which of the following? Question 24 options: a) Openings in the pharynx. In aquatic chordates they allow for exit of water that enters the mouth. b) Elongations of the posterior portion of the body. Use for locomotion in fish, or balance in some terrestrial vertebrates. c) Flexible, rod-shaped structures that grows from mesoderm. Gives support to an animal in embryonic development of chordates or for entire life depending on the species. d) Tissues that produces thyroid type hormones. e) Hollow tubes that develops from ectoderm. Develops into the central nervous system.arrow_forward
- There are two types of chordates the invertebrates and the vertebrates. How do invertebrate chordates differ from vertebrate chordates?arrow_forwardDuring chordate evolution, what is the sequence (from earliest to most recent) in which the following structures arose/evolved? 1 v [ Choose ] notochord gastrulation bilateral symmetry 2 true tissues deuterostome embryonic development (mouth then anus) 3 [ Choose ] 4 [ Choose ] [ Choose ]arrow_forward1 page: Members of the Class Aves and Teleost members of the Class Osteichthyes have both undergone significant radiations. Characterize both aves and teleosts as highly derived from other vertebrates by giving examples of several unique evolutionary structures from each group.arrow_forward
- Give an example animal for some of the key adaptations of chordates: (a) backbone, (b) skull, (c) amniotic egg, (d) bony skeleton. Choose a different animal for each adaptation.arrow_forwardMammals belong to a group of amniotes known as synapsids. Three major lineages of mammals had emerged by the early Cretaceous period. In a tabulated form, compare these three lineages to illustrate their diversity in terms of: a. Embryonic developmen, b. How the young are fed and c. Period of gestationarrow_forwardDescribe the evolution of mammals, tracing their synapsid lineage from early amniote ancestors to true mammals. How would you distinguish pelycosaurs, early therapsids, cynodonts, and mammals?arrow_forward
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