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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Chapter 23, Problem 6RQ
Amphioxus long has been of interest to zoologists searching for a vertebrate ancestor. Explain why amphioxus captured such interest and how it is different from the hypothesized most recent common ancestor of all vertebrates.
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Amphioxus long has been of interest to zoologists searching for a vertebrate ancestor. Explain why amphioxus captured such interest and how it is different from the hypothesized most recent common ancestor of all vertebrates.
Which of the following taxa of fish shared most direct common ancestry with the group of animals that evolved into the terrestrial tetrapods?
-Subclass Elasmobranchii
-Class Neopterygii
-Subclass Sarcopterygii
-Class Actinopterygii
-Class Chondrichthyes
Within the subphylum Urochordata is a group called the appendicularians (or larvaceans; class Appendicularia). This relatively obscure group of organisms plays an important role in the global carbon cycle and other biogeochemical processes in the ocean. Use library and Internet resources to research the natural history of these unique invertebrate chordates. What do they eat? How do they capture food?
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Loose Leaf For Integrated Principles Of Zoology
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- Explain the significance of the discovery of Archaeopteryx. Why did this fossil demonstrate beyond reasonable doubt that birds are grouped phylogenetically with dinosaurs?arrow_forwardWhich of the following is the correct classification for the following chordate animal: This animal has a skeleton made of bone. Most modern day fish are in this group. They use gills to breathe and have a swim bladder to help control buoyancy. They also have a lateral line to detect vibrations in the water. Question 29 options: a) Superclass Agnatha b) Urodela / Salamanders c) Anura / Frogs d) Marsupial e) Class Osteichthyes f) Reptiles (non avian) g) Monotreme h) Birds i) Cephalochordata j) Eutharia k) Class Chondrichthyesarrow_forwardFossil foraminiferans are relevant sources of data in the study of biodiversity and of the past environmental conditions on Earth. Explain why forams have such a well-preserved fossil records that served as a valuable tool in scientific research.arrow_forward
- Which 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_forwardCan you answer all the parts to this question regarding the diagram Hemichordates are a sister group to the chordates. This group contains organisms called acorn worms. They don’t have all of the chordate characteristics - just some. Question Part a: What about the name hemichordate might give you a hint about their chordate characteristics? Part b: What characteristics do all chordates share based on this cladogram? Part c: Which ones are synapomorphies of the chordates and which ones are symplesiomorphies based on this cladogram?arrow_forwardWhat are examples of the following groups of vertebrates: Chondrichthyes, Actinopterygii, Actinistia, Dipnoi, and Tetrapoda? How many species are in each of the above groups? Which one has the most species? When did the first vertebrates appear, and when did they first live on land? Where do we find the earliest fossils of vertebrates, and where do we find the earliest fossils of terrestrial (land-living) vertebrates? What are the following and how are they related to humans: Pongo, Gorilla, Pan, Sahelanthropus, Ardipithecus, Australopithecus, Homo erectus, and Homo neanderthalensis? Which of these is our closest living relative? What are some of the traits that these organisms share with us? When and where did each of the extinct forms above live? What does this tell us about when our lineage split from the most recent ancestor we share with our closest living relative?arrow_forward
- The domesticated dog (Canis familiaris) belongs to which of the following chordate classes? class Chondrichthyes (the cartilaginous fishes) class Osteichthyes (the bony fishes) class Reptilia (the reptiles) class Amphibia (the amphibians) class Mammalia (the eutherian mammals)arrow_forwardIf you discovered a fossil hominin that was adapted for both arboreal and bipedal locomotion, had an orthognathic face, strong chewing muscles, and molariform premolars, which genus would it be best attributed to? Sahelanthropus Ardipithecus Australopithecus Paranthropus Homoarrow_forwardUse the photo and fossil of this specimen (they are from the same species that was an ancestor to a modern class of tetrapods) to answer the following: What class of tetrapod would you predict this specimen belongs to? What features of the body make it resemble the class you provided? What MAJOR ABILITY would this specimen lack that the class above would have? What is the name of this type ancestral specimen?arrow_forward
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