Classification Basics
Animals are multicellular organisms made of this type of cell.
eukaryotic cells?
An animal whose body can be divided into matching left and right halves has this type of symmetry.
What is bilateral symmetry?
Every animal in this major group lacks a backbone.
What are invertebrates?
Arthropods are identified by jointed appendages and this hard outer covering.
What is an exoskeleton?
An animal that has a backbone belongs to this major animal group.
What is a vertebrate?
Frogs belong to this vertebrate group that commonly begins life in water and undergoes metamorphosis.
What are amphibians?
A wildlife researcher discovers an unfamiliar animal living near a freshwater wetland.
The animal:
Final Jeopardy Question
Using Chapter 10 concepts, identify the major vertebrate group this animal most likely belongs to.
Then explain your answer by using three clues from the description and connecting each clue to that animal group.
Final Jeopardy Answer
Amphibian
Strong evidence could include:
Scientists place animals into groups by comparing these similarities.
What are shared characteristics or traits?
A sea star has body parts arranged around a central point. This type of body arrangement is called this.
What is radial symmetry?
These simple aquatic animals have many pores in their bodies and are usually asymmetrical.
What are sponges?
Adult members of this arthropod group normally have six legs and three main body sections.
What are insects?
Vertebrates have this type of skeleton located inside their bodies.
What is an endoskeleton?
Dry, scaly skin that helps reduce water loss is an important characteristic of this vertebrate group.
What are reptiles?
In the Linnaean classification system, this is the broadest category studied in Chapter 10.
What is Kingdom?
A barrel sponge cannot be divided into matching halves. Its body is described using this term.
What is asymmetry?
Jellyfish, corals, and sea anemones belong to this group of animals with specialized stinging cells.
What are cnidarians?
Crabs, shrimp, and lobsters belong to this arthropod group.
What are crustaceans?
This flexible supporting rod is present at some point during the life of every chordate.
What is a notochord?
This structure is unique to birds among the vertebrate groups studied in Chapter 10.
What are feathers?
Put these classification levels in order from broadest to most specific:
Family, Kingdom, Species, Class, Genus, Phylum, Order.
What is Kingdom → Phylum → Class → Order → Family → Genus → Species?
This term describes having the brain and important sensory organs concentrated near one end of the body.
What is cephalization?
Sea stars and sea cucumbers belong to this group of spiny-skinned marine animals.
What are echinoderms?
Spiders and scorpions belong to this arthropod group and typically have eight legs.
What are chelicerates?
Sharks, skates, and rays belong to this fish group because their skeletons are made mostly of cartilage.
What are cartilaginous fish?
Hair or fur and milk-producing females are defining characteristics of this vertebrate group.
What are mammals?
This field studies created kinds of organisms and attempts to identify the boundaries between those created kinds.
What is baraminology?
An animal takes food in through one opening and eliminates waste through a different opening. It has this type of digestive tract.
What is a complete gut?
Snails, clams, squid, and octopuses belong to this group of mostly soft-bodied invertebrates.
What are mollusks?
An unknown animal has six legs, a head, thorax, abdomen, and an exoskeleton. Identify its arthropod group.
What is an insect?
This fish group lacks jaws and paired fins.
What are jawless fish?
Kangaroos belong to this mammal group because their young are born very early and continue developing in a pouch.
What are marsupials?