Page 177 - Science Course 3 (Book 1)

Mo4-L6: Key Concept Check

Direction: On the line before each definition, write the letter of the term that matches it correctly.
Each term is used only once.

1. a slight difference in inherited traits among individual members of A. adaptation
a species B. behavioral adaptation

2. a trait that helps a species survive in its environment C. camouflage
D. functional adaptation
3. a process by which organisms that have variations that help them
survive in their environment live longer, compete better, and E. mimicry
reproduce more than those that do not have the variation F. natural selection

4. the selection and breeding of organisms that have desired traits G. selective breeding
H. structural adaptation
5. a physical trait that increases survival
I. variation
6. a behavior or action that increases survival

7. a biochemical change that increases survival

8. an adaptation that helps a species blend in with its environment

9. an adaptation in which one species looks like another species

Direction: On the line before each statement, write the letter of the correct answer.

10. Offspring are different from their parents because of the process of
A. selective breeding.
B. sexual reproduction.
C. asexual reproduction.

11. Slight differences in inherited traits among individual members of a species are called
A. genes.
B. variations.
C. acquired traits.
12. Variations occur through
A. mutations.
B. fertilization.
C. adaptations.

13. A mutation can
A. help an organism.
B. harm an organism.
C. harm or help an organism.

14. A trait that helps a species survive in its environment is a(n)
A. variation.
B. mutation.
C. adaptation.

15. Giraffe spots are an example of a mutation that became part of the giraffe population’s
A. mimicry.
B. genotype.
C. environment.

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