Chapter 3 Test Adaptations: Question Preview (ID: 1192)

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What are adaptations?
a) sperm cells and egg cells uniting to form a fertilized egg
b) two genes working together to determine a trait
c) changes in the structure of a gene or chromosome
d) traits that help organisms survive in their environment

Which of these is a basic need of an animal?
a) food
b) all of the above
c) oxygen
d) water

A bee's "dancing" is an example of a
a) behavioral adaptation.
b) defense against enemies.
c) learned response.
d) structural adaptation.

Which animal uses its gills to strain food particles out of the water?
a) a barracuda
b) a cormorant
c) a clam
d) a sea slug

What is the benefit to the octopus of shooting out water in a fast jet?
a) It helps to get food for the octopus.
b) It can move away quickly.
c) It helps to eliminate waste.
d) It allows the octopus to get oxygen.

What is the main function performed by the skin of a deer?
a) It prevents the deer from drying out.
b) It supports the deer\'s weight.
c) It helps the deer move.
d) It helps the deer maintain its shape.

A small tail and ears, hairy paws, and a fat layer help the polar bear because they allow the bear to
a) drink less.
b) find a mate.
c) eat less.
d) stay warm.

Some desert plants, like the barrel cactus, obtain water
a) only at night.
b) by producing more chlorophyll.
c) by speeding up photosynthesis.
d) through shallow roots that quickly absorb whatever rain falls.

How does the ermine's heavy white fur help it in the winter?
a) It keeps the ermine warm.
b) All of the above.
c) It allows the ermine tohunt prey undetected.
d) It hides the ermine from predators.

New variations in a species are due to
a) mutations.
b) selective breeding.
c) recessive genes.
d) dominant genes.

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