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.

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.

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter24: Animals Ii: The Chordates

Section: Chapter Questions

Problem 5SA: A divergence from ________ gave rise to tetrapods. a. ray-finned fishes c. cartilaginous fishes b....

See similar textbooks

Similar questions

Figure 15.33 Which of the following statements about common features of chordates is true?a. The dorsal hollow nerve cord is part of the chordate central nervous system.b. In vertebrate fishes, the pharyngeal slits become the gills.c. Humans are not chordates because humans do not have a tail.d. Vertebrates do not have a notochord at any point in their development; instead, they have a vertebral column.
Which of the following list places the important evolutionary innovations in the correct order of appearance in the chordate phylogeny? a. Vertebrae - bony skeleton - notochord - jaws - internal nares - lobe fins b. Jaws - notochord - bony skeleton - vertebrae - lobe fins - internal nares c. Notochord - jaws - vertebrae - internal nares - lobe fins - bony skeleton d. Notochord - vertebrae - jaws - bony skeleton - lobe fins - internal nares
Which of the following features does not distinguish humans as a member of phylum Chordata? a. Human embryos undergo indeterminate cleavage. b. A spinal cord runs along an adult human’s dorsal side. c. Human embryos exhibit pharyngeal arches and gill slits. d. The human coccyx forms from an embryonic tail.
Lampreys are jawless fish. Which conclusion about lamprey evolution is supported by the evidence in the diagram? A. Lampreys developed after hinged jaws formed. B. Lampreys once had hinged jaws but lost them during evolution. C. Lampreys are invertebrates and could not develop hinged jaws. D. Lampreys diverged from other vertebrates before hinged jaws evolved.
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.
A marine biologist catches a species of fish she has never seen before. Upon examination, she determines that the species has a predominantly cartilaginous skeleton and a swim bladder. If its pectoral fins are not fused with its head, to which category of fish does the specimen belong? a. Rays b. Osteichthyes c. Sharks d. Hagfish
Hagfish, lampreys, sharks, and tuna are all chordates that can also be classified into which group? a. Craniates b. Vertebrates c. Cartilaginous fish d. Cephalocordata
Pharyngeal 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.
According to "Our Earliest Ancestors", what is the main physical feature on Sahelanthropus tchadensis that indicates it was a biped? A.The non-divergent big toe B.The angle of the femur C.The foramen magnum D.The shape of the hips
Amphibians evolved from what type of ancestral fish?a. sea squirts and lancelets d. lobe-finned fishesb. ray-finned fishes e. jawless fishesc. cartilaginous fishes
Chordates are named for having this generalized structure. A. Spinal cord B. Stomochord C. Notochord D. All of the choices
A member of the protostome group of animals a. has no symmetry. b. has an anus derived from the blastopore. c. has a mouth derived from the blastopore. d. has a mouth derived from the primitive groove.