Which is an example of a learned behavior?
A bear cub practices catching salmon the way its mother does.
A baby gazelle rises to its feet within a few minutes of its birth.
A baby kangaroo climbs into its mother’s pouch as soon as it is born.
An adult salmon returns to its freshwater stream when it is time to reproduce.
Which reproductive adaptation is more characteristic of mammals than amphibians?
external fertilization with internal development
internal fertilization with internal development
external fertilization with external development
internal fertilization with external development
What kingdoms did Carolus Linnaeus originally use for his classification system?
Fungi and Protista
Fungi and Animalia
Plantae and Protista
Plantae and Animalia
Sandworms are annelid worms that live on the seafloor. They absorb oxygen and excrete wastes through their skin. Which characteristic will best help the worm carry out these functions?
North Carolina Test of Biology. Form I RELEASED Fall 2009
large surface area compared to body volume
large number of hearts
large diameter blood vessels
large mouth compared to body
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