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6th Chap2 Vocab
Question | Answer |
---|---|
An animal that has the beginnings of a backbone during one or more stages of development | chordate |
A hard, external covering of an animal | exoskeleton |
A cold-blooded animal whose body temperature fluctuates with the temperature of its environment | ectotherm |
An external structure that extends from the main body | appendage |
A warm-blooded animal that maintains a constant internal temperature | endotherm |
A strong, structural protein found in skin, hair, nails, and feathers | keratin |
An invertebrate that has a segmented body, jointed appendages, and usually an exoskeleton | arthropod |
A mainly aquatic arthropod that has a hard exoskeleton and two pairs of antennae | crustacean |
An invertebrate with a soft body that is typically enclosed in a shell | mollusk |
An invertebrate that exhibits radial symmetry and a tough, spiny skin | echinoderm |
An invertebrate with radial symmetry, a soft body, and tentacles with stinging capability | cnidarian |
An invertebrate with a porous, asymmetrical body that pumps and filters water | poriferan |
The small pores through which water and nutrients enter a sponge | ostia |
A large region that has a particular climate and specific plants and animals | biome |
Example of an endothermic vertebrate | bird |
Example of an ectothermic vertebrate, life cycle in water AND on land | amphibian |
Example of an arthropod with eight legs and two body segments | arachnid |
Example of an ectothermic vertebrate, aquatic habitat, gills, two-chambered heart | fish |
Three characteristics: body hair, three middle ear bones, feeds milk to young | mammal |
Lacks a backbone | invertebrate |
Example of an echinoderm with radial symmetry | starfish |
Round, flat or segmented | types of worms |
Scientist who developed classification system most used today | Carolus Linnaeus |
Example of a poriferan | sponge |