Evolution
Chapter 5 Multiple Choice
Shell-breaking predators and shelled molluscs in the Mesozoic (like insects
and angiosperms in the Cretaceous) affected each other’s evolution by
causing each other’s extinction.
reducing each other’s diversity.
augmenting each other’s diversity.
ensuring each other’s survival.
creating refugia for each other.
Textbook Reference: Mesozoic Life
The extinction of horned dinosaurs at the end of the Cretaceous left only one
surviving lineage of dinosaurs. This lineage radiated extensively in the late
Cretaceous or early Tertiary and today includes about 10,000 species of
turtles.
pterosaurs.
therapsids.
crocodilians.
birds.
Textbook Reference: Mesozoic Life
Most of the different _______ known in animals first appear in the historical
record during the Cambrian.
endosymbionts
cell types
classes of RNA
predatory lifestyles
