a. According to the evidence, the animal kingdom is a .
paraphyletic group.
polyphyletic group.
monophyletic group.
b. Mammals and birds eat much more often than reptiles do. Whichof the following traits shared by mammals and birds best explainsthis habit?
endothermy
large body size
amniotic egg
terrestrial
c. Which bird characteristic evolved specifically as anadaptation to flight?
four limbs
feathers
loss of heavy teeth
amniotic egg
d. Animals are unique within the supergroup Unikonta because.
animals have multicellular bodies.
animals can synthesize the structural carbohydrate chitin.
animals have a unique myosin-synthesis pathway.
animal cells are embedded in a protein matrix.
