Physical Structures in Living Things
What is a hard skeleton on the outside of the body called?
Exoskeleton
An _____________ is a characteristic that increases an organism's ability to survive and reproduce in it's environment.
Adaptation
Animals have physical and _____________ adaptations that help them survive by responding to sudden threats.
behavioral
The process of an animal changing form during it's life cycle is called _______________________.
Metamorphosis
What is it called when living things can make other living things similar to themselves?
Reproduction
Organisms receive genes from their ___________.
Parents
Useful changes in the body parts of animals are called ___________________ adaptations.
Structural
Name the two types of metamorphosis.
Complete and Incomplete
Animals such as insects take air in through ________.
Spiracles
_____________ _____________ helps species develop adaptations to survive in different environments.
Natural Selection
True or False? Natural selection affects all species of living things.
True
During complete metamorphosis there are ___ stages.
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Plants exchange gases with their environment through structures called _________.
Stomata
__________________ is the predictable order of changes in a community after changes occur.
Succession
When a species has no members left that are living, the species becomes _____________.
Extinct
During incomplete metamorphosis there are __ stages.
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