Life Science
Diversity and Adaptations of Organisms

National Standards State Standards SFUSD Standards
C5a* Millions of species of animals, plants, and microorganisms are alive today. Although different species might look dissimilar, the unity among organisms becomes apparent from an analysis of internal structures, the similarity of their chemical processes, and the evidence of common ancestry. NOT PRESENT IN STATE STANDARDS Content Standard 12 (partial): Students understand that each species shows variation among its members and differs from other species.

Content Standard 15 (partial): Students understand that the fossil record documents the appearance, diversification, relationships, and extinction of many living things in relation to changes through earth's history and that living things are classified by considering their evolutionary relationships.

C5b* Biological evolution accounts for the diversity of species developed through gradual processes over many generations. Species acquire many of their unique characteristics through biological adaptation, which involves the selection of naturally occurring variations in populations. Biological adaptations include changes in structures, behaviors, or physiology that enhance survival and reproductive success in a particular environment. 7.3. Biological evolution accounts for the diversity of species developed through gradual processes over many generations.

7.3a. both genetic variation and environmental factors are causes of evolution and diversity of organisms.

Content Standard 11 (partial): Students understand that living things in similar environments have structures which function to make survival in their environments possible.

Content Standard 12 (partial): Students understand that each species shows variation among its members and differs from other species.

C5c* Extinction of a species occurs when the environment changes and the adaptive characteristics of a species are insufficient to allow its survival. Fossils indicate that many organisms that lived long ago are extinct. Extinction of species is common; most of the species that have lived on the earth no longer exist. 7.3e. extinction of a species occurs when the environment changes and the adaptive characteristics of a species are insufficient for its survival. Content Standard 15 (partial): Students understand that the fossil record documents the appearance, diversification, relationships, and extinction of many living things in relation to changes through earth's history and that living things are classified by considering their evolutionary relationships.
NOT PRESENT IN NATIONAL STDS 7.3b. the reasoning used by Darwin in making his conclusion that natural selection is the mechanism of evolution.

7.3c. how independent lines of evidence from geology, fossils, and comparative anatomy provide a basis for the theory of evolution.

7.3d. how to construct a simple branching diagram to classify living groups of organisms by shared derived characteristics, and expand the diagram to include fossil organisms.

Content Standard 15 (partial): Students understand that the fossil record documents the appearance, diversification, relationships, and extinction of many living things in relation to changes through earth's history and that living things are classified by considering their evolutionary relationships.

To front page

Back (To Populations and Ecosystems)

Forward (To Earth and Space Science Pages)

9/30/99