Synapsids Flashcards
1
Q
what are the shared mammalian traits?
A
- hard palate
- hair/fur
- endothermy
- mammary glands
- facial musculature
- nocturnal
- aveloar lungs
2
Q
what does mammals include
A
- monotremes
- marsupials
- eutherians/placentals
3
Q
what is the defining features of mammals?
A
mammary glands
4
Q
what are the 2 evolutionary theories of hair/fur
A
- insulation
- sensory
5
Q
why is mammalian respiration just as efficient to other groups even though the air mixes
A
there is a VERY large surface area compared to non mammals and they have the smallest red blood cells so gas exchange is vey efficient
6
Q
what makes monotremes different than plancetals and marsupials
A
they lay eggs and locate through hair instead of nipple
7
Q
A
