Page 119 - Science Course 3 (Book 1)

Mo3-L2: Key Concept Organizer

Direction: On each line, write V if the statement is about variations or A if the statement is about
adaptations.

many similar adaptations
variations

1. There are three categories of these: structural, behavioral, and functional.
2. If this is helpful to one individual, it can spread to all members of a population.
3. Every species has many of these.
4. An example is a jackrabbit’s powerful legs.
5. These are slight differences in the appearance of individual members of a species.

6. These arise naturally in populations.
7. These are a result of random mutations in an animal’s phenotype.
8. Moving in herds for protection is an example of this.
9. A drop in body temperature as characteristic of a species is an example of this.
10. More of these occur as time passes, so they eventually accumulate.
11. This is characteristic of a species and enables the species to survive in an environment.
12. These involve color and shape seen in an entire species.

13. As a result of natural selection, these spread from one individual to other members of a population.
14. All members of the saddle-back tortoise have these.
15. These might help a few members of a population compete for food.

Mo3-L2: Key Concept Check

Direction: Respond to each statement in the space provided.

Environmental Adaptations
1. Explain camouflage. Draw an example 2. Explain mimicry. Draw an example of how
showing how camouflage helps an animal mimicry helps an animal survive.
survive.

3. Explain selective breeding, including why 4. Describe a structural adaptation that affects
selective breeding is not a change caused by mouth shape. Draw an example of a mouth-shape
natural selection. adaptation.

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