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II. Application and Critical-Thinking QuestionsComparing and Contrasting the Vertebrate ClassesThe table below lists 20 characteristics that taxonomists use to classify vertebrate animals. Place an X in each box when a characteristic is normally observed in the class of vertebrates at the top of each column. Leave the box blank for characteristics not normally observed in a particular class. (Note: A stated characteristic might be shown by only one class, or it might be shared by two or more classes.) Characteristic|Agnatha (Jawless fish)AmphibiaAves (Birds)MammaliaOsteichthyes (Bony fish)Reptilia1. Many hollow bonesX2. Paired fins present in adultsX3. Well-developed olfactory (smell) organs in headXXX4. Mostly tetrapodal (possessing four prominent limbs)XXX5. Skeleton composed mainly of boneXXXXX6. Gas exchange mainly across the skin surfaceX7. Endothermic (warm blooded)XX8. Nourish young with milk formed by female mammary glandsX9. Lungs possess numerous air sacsXX10. Limbs end with claws/nailsXXX Comparing InvertebratesPhylumBody StructureSymmetryOrgans & SystemsHabitatPorifera

All shapes, sometimes vase shapedNoneNo organs, some specialized cellsAquatic, generally marineCnidarians

Polyp and medusa formsRadialNerve nets and distinct cell layers, tissues, no organ systemsAquaticFlatworms

FlatBilateralNo circulatory system at allAqueous environments, sometimes parasiticRoundworms

RoundBilateralComplete digestive systemAqueous environments, sometimes parasiticAnnelids

SegmentedBilateralClosed circulatory system, complete digestive systemLand or waterMollusks

Soft body, often covered in a shellBilateralBoth open and closed circulatory systemsGenerally aquaticArthropods

Exoskeleton, segmented bodies with jointed appendagesBilateralOpen circulatory system, complex nervous and sensory systems (such as eyes)Land and water (crustaceans are concentrated in ocean while insects and arachnids live mainly on land)Echinoderms

Calcium based endoskeleton covered in spiny skinPentaradialOpen circulatory system, nerve cord for nervous system, complex digestive systemMarine, often on rocky shores

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Related Questions

Are Arthropods vertebrate or invertebrate?

Arthropods are invertebratesArthropods are invertebrates not vertebrates.invertabrate


Are all invertebrates arthropods?

Yes all arthropods are invertebrates.


Are some arthropods vertebrate's?

No, they are not. Vertebrates have vertebra, which are the bones in the spinal column. Arthropods are a group of animals that have no backbone but what's called an exoskeleton. a 'skeleton' outside the body like a shell.No they are invertebrates under the group ArthropodaArthropods are invertebrates


How numerous are invertebrates?

most invertebrates are arthropods, and 70% of animals in the world are arthropods (insects), so I'm guessing there are more invertebrates than vertebrates.


How are arthropods different from invertebrates?

Arthropods are invertebrates. An invertebrate is an animal without an internal skeleton and that's exactly what an arthropod is.


What is the opposite of the arthropods?

The opposite of arthropods would be non-arthropods or invertebrates that do not belong to the phylum Arthropoda.


Are rolly-polys invertebrates?

All insects and other arthropods are invertebrates.


What is the difference between vertebrates an invertebrates?

Vertebrates have spines & invertebrates do not have spines.


Are arthropods and invertebrates the same?

No they are different CC


Do arthroupods have backbones?

No, Arthropods are invertebrates,(spineless.)


Do arthropods have backbones?

Do arthropods have backbones?No, it is the exoskeleton that holds the arthropod's body together. arthropods are invertebrates, which means they do not have backbones.


What is the major difference between vertebrates and non-vertebrates?

The major difference between vertebrates and invertebrates is that vertebrates have a back bone and invertebrates don't