Mammals
What are the specialized hairs found on these mammals?
whiskers; quill
What are the three characteristics of birds?
Feathers and a beak; four limbs; hard-shelled eggs
How are amphibians different from fish?
Amphibians can live on land
Together, what are vertebrae called?
A backbone
What are the functions of quills or whiskers
a sense of touch; self defense
What are the benefits of flight?
more food choices and sources, migration, escape from danger, raise young in safe places
Where do wood frogs begin their lives?
in the water
Which organ does the skull protect?
What are two ways that body fat functions in mammals?
Body fat insulates mammals and stores energy obtained from food.
What are the adaptations that allow birds to fly?
special endoskeleton and respiratory system, wings and feathers, hollow bones
What physical developments occur in tadpoles that allow them to move onto land?
They develop legs and lungs.
How are gills similar to lungs?
Both gills and lungs transfer oxygen into blood.
Which features of marine mammals enable them to live in water?
blowhole, flippers, flukes, blubber
What are some traits that help keep birds warm?
What are some traits that help keep birds cool?
warm: down and contour feathers, shivering; cool: fluff feathers, finding shade
How are tadpoles similar to fish?
They breathe with gills and swim and live in the water.
What are three adaptations that allow fish to live in water?
Gills enable fish to obtain oxygen from water. Swim bladders allow fish to control the depth at which they swim, and the lateral line enables fish to sense nearby organisms and objects.
What is the purpose of the blowhole?
It allows the mammal to come to he surface of the water and breathe.
How are endotherms different from ectotherms?
Endotherms maintain a constant body temperature, but ectotherms match their environment’s temperature.
What visible changes occur in a wood frog tadpole’s body as it transforms into an adult wood frog?
The most obvious changes are the growth of legs (back pair first) and the shrinking tail. The shape of the frog’s head also changes. Its eyes grow toward the top of the head, and its round mouth widens and develops an upper and lower jaw.
What is the difference between cartilaginous fish and bony fish?
Cartilaginous fish have skeletons made of cartilage. Bony fish have skeletons made of bone and are covered with scales.