Ch.34 - VertebratesSee all chapters
All Chapters
Ch.1 - Introduction to Biology
Ch.2 - Chemistry
Ch.3 - Water
Ch.4 - Carbon
Ch.5 - Biological Molecules
Ch.6 - Cells
Ch.7 - The Membrane
Ch.8 - Energy and Metabolism
Ch.9 - Respiration
Ch.10 - Photosynthesis
Ch.11 - Cell Signaling
Ch.12 - Cell Division
Ch.13 - Meiosis
Ch.14 - Mendelian Genetics
Ch.15 - Chromosomal Theory of Inheritance
Ch.16 - DNA Synthesis
Ch.17 - Gene Expression
Ch.18 - Regulation of Expression
Ch.19 - Viruses
Ch.20 - Biotechnology
Ch.21 - Genomics
Ch.22 - Development
Ch.23 - Evolution by Natural Selection
Ch.24 - Evolution of Populations
Ch.25 - Speciation
Ch.26 - History of Life on Earth
Ch.27 - Phylogeny
Ch.28 - Prokaryotes
Ch.29 - Protists
Ch.30 - Plants
Ch.31 - Fungi
Ch.32 - Overview of Animals
Ch.33 - Invertebrates
Ch.34 - Vertebrates
Ch.35 - Plant Anatomy
Ch.36 - Vascular Plant Transport
Ch.37 - Soil
Ch.38 - Plant Reproduction
Ch.39 - Plant Sensation and Response
Ch.40 - Animal Form and Function
Ch.41 - Digestive System
Ch.42 - Circulatory System
Ch.43 - Immune System
Ch.44 - Osmoregulation and Excretion
Ch.45 - Endocrine System
Ch.46 - Animal Reproduction
Ch.47 - Nervous System
Ch.48 - Sensory Systems
Ch.49 - Muscle Systems
Ch.50 - Ecology
Ch.51 - Animal Behavior
Ch.52 - Population Ecology
Ch.53 - Community Ecology
Ch.54 - Ecosystems
Ch.55 - Conservation Biology
Sections
Chordates
Aminotes
Primates and Homonids
Additional Practice
Vertebrates Review
Additional Problems
The most primitive combination of features of any chordate is found in thea. lancelet larvab. amphibian tadpolec. tunicate larvad. newly hatched sharks
The major factor responsible for sharks and bony fishes replacing pioneer vertebrates wasa. better jawsb. better respirationc. stronger bonesd. better swimminge. better teeth
Most paleontologists consider amphibians to have evolved froma. coelocanthsb. teleostsc. rhipidistiansd. ray-finned fishese. lung fish
In the _______________ , the notochord persists in the adult.a. lanceletsb. raysc. skatesd. sharke. tunicates
Unique among reptiles, the _______________ have a parietal eye.a. lizardsb. crocodilesc. snakesd. turtlese. tuatara
The story of vertebrate evolution started in the ancient seas of the _______________ period.a. cambrianb. ordovicianc. devoniand. siluriane. carboniferous
Not all amphibians havea. cutaneous respirationb. pulmonary veinsc. lungsd. partially divided hearte. legs
Amphibians bearing live young are among thea. caeciliansb. frogsc. toadsd. salamanderse. newts
Adult urochordates secrete a sack composed mainly ofa. proteinb. cellulosec. phospholipidd. gelatine. pectin
In sharks and bony fishes, the propulsion fin is the _______________ fin.a. pectoralb. dorsalc. pelvicd. ventrale. caudal
Sharks must constantly swim because they lacka. pectoral finsb. a swim bladderc. gillsd. lungse. a lateral line system
A characteristic that distinguishes chordates from other animals is:a. a notochordb. a nerve cordc. pharyngeal slitsd. all of the abovee. none of the above
Flat, chisel-shaped teeth are called:a. molarsb. premolarsc. caninesd. incisorse. none of the above
Before amphibians could be successful on land, they had to:a. develop a more efficient heartb. develop a way to prevent drying outc. develop lungsd. b and ce. all of the above
Which of the following do not have skin that is impermeable to water?a. mammalsb. birdsc. amphibiansd. reptilese. All of the above have skin impermeable to water
An internal system of rigid material that supports the body is known as a(n)a. Hydrostatic skeletonb. Exoskeletonc. Endoskeleton 
Which of the following is not a characteristic of all chordates?a. Bilateral symmetryb. Vertebral columnc. Coelomated. Dorsal hallow nerve chord
Which of the following is not a characteristic of all chordates?a. Phayngeal archesb. Diploblasticc. Body cavityd. Cephalized
The lancelet is an example of a(n)a. Cephalochordateb. Urochordatec. Vertebrated. Echinoderm
Amphibian blood circulation is double-loop circulation. Describe how this form of blood circulation works.
Give two characteristics that separate Chordates from other animals. 
What is the purpose of a nictitating membrane in amphibians?