Find the hash mark indicating the origin of jaws. Which group or groups of vertebrates possess jaws? Which group(s) diverged before jaws originated? Are birds more closely related to amphibians or to crocodiles? Explain how you know this.

Find the hash mark indicating the origin of jaws. Which group or groups of vertebrates possess jaws? Which group(s) diverged before jaws originated? Are birds more closely related to amphibians or to crocodiles? Explain how you know this.

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter24: Animals Ii: The Chordates

Section: Chapter Questions

Problem 12SA: Match the organisms with the appropriate description. ___ tunicates a. pouched mammals ___ fishes b....

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Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.

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Find the hash mark indicating the origin of jaws. Which groups of vertebratespossess jaws? Which group(s) diverged before jaws originated?
What is the currently favored explanation for the evolution of vertebrate jaws?
The earliest-diverging gnathostomes (jawed vertebrates) were fish. Which one of the following statements about the characteristics of different groups of modern jawed fish is INCORRECT? a. Ray-finned fish possess a bony skeleton and an operculum covers the gills. b. Cartilaginous fish are denser than water and maintain buoyancy using fins and a large oil-filled liver. c. Lobe-finned fish such as dipnoi possess both gills and lungs. d. Ray-finned fish possess fins supported by skeletal extensions of the pectoral and pelvic areas and moved by muscles. e. Cartilaginous fish possess flexible cartilage skeletons, which is a derived character.
By watching these videos, https://www.coursera.org/lecture/early-vertebrate-evolution/3-1-evolution-of-jaws-part-1-J4bOm https://www.coursera.org/lecture/early-vertebrate-evolution/3-1-evolution-of-jaws-part-2-d90NX How and why do jaws have evolved?
Evolutionarily, the jaws of vertebrates developed from the circular mouth of lampreys. the third and fourth gill arches of primitive jawless fishes. the operculum. the claspers. the last gill arch of primitive jawless fishes.
White(2002) indicated that the history of the gnathostomes is the history of jaws. What are some of the functional and evolutionary advantages of gnathostomes?
It is thought that jaws, which are found in the higher vertebrates, evolved from: a. progressive hardening of the cyclostome mouth. b. cartilaginous arches used to support gills. c. small bones associated with the brain capsule. d. the bony teeth found on lamprey tongues.
Why are paleontologists excited to find teeth in the fossil record? Name three pieces of information paleontologists can learn from fossil teeth.
Which of the following is true regarding evolutionary changes in morphology of dentition over time in our evolutionary lineage? Group of answer choices The reduction in size of canines the reduction in the size of the third premolar The increase in the total number of teeth The increase in enamel thickness the increase in the size of molars and canines
Which of the following characteristics are indicative of mammals? post-orbital bar/closure homodont teeth heterodont teeth
Why was the evolution of jaws selected for? (Choose All That Apply) There's more than one correct answer. Please highlight the correct answer it allowed for the evolution of teeth it increased the efficiency of feeding it increased respiratory efficiency it increased the ability to grab food
Based on phylogeny and history of evolution, do new anatomical features such as lungs (amphibians) arise de novo or came from pre-existing structures of their ancestors (like gills of fish)? Explain.