Classification IB

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IB Biology High Level Learning Objectives for Classification

5.5 Classification

1. Outline the binomial system of nomenclature.

2. List seven levels in the hierarchy of taxa— using an example from two different kingdoms for each level.

3. Distinguish between the following phyla of plants, using simple external recognition features:


 4. Distinguish between the following phyla of animals, using simple external recognition features:


 5. What determines which domain an organism is in?

 6. What factors determine which kingdom an organism is in?

7. Why has the old “Kingdom” system proved to be impractical?

8. How has DNA technology changed the way that classification is done?

 9. Explain the relationship between taxonomy and phylogeny.


Evolution Unit IB

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IB Biology HL Learning Objectives (5.4)

5.4 Evolution

1. Define evolution.

2. Outline the evidence for evolution

a. The fossil record (generally)

b. Transition fossils (specifically)

c. Homologous anatomical structures

d. Analogous anatomical structures

e. Vestigial anatomical structures

f. Comparative embryology

g. Molecular Homology (DNA and proteins)

h. Artificial Selection

i. Biogeography

j. Observed Evolution (pick one)

3. Do populations tend to produce more or less offspring than the environment can support? Explain.

4. Explain the consequences of the reproductive strategy above.

5. Members of a species show variation. What are some good examples of this? How is this advantageous? Also, Is it possible for members of different species to have the same phenotype?

6. Explain how sexual reproduction promotes variation in a species.

7. Explain how natural selection leads to evolution.

8. Explain two examples of evolution in response to environmental change; one must be antibiotic resistance in bacteria.

Example 1 (your choice)

Bacterial Resistance to Antibiotics

 9. How has modern science refined our understanding of evolution since Darwin/Wallace’s publication?

10. Why does evolution have to involve the change of the genetic makeup of a population over time?

11. Explain each of the following modes of evolution in a population. For each one, describe the cause of change in the genetic makeup of a population and how the population evolves as a result of that change, and provide 1 “real world” examples of the process in action:

Natural Selection

Genetic Drift

Gene Flow

Sexual Selection

12. Why is evolution an “emergent property” of populations of organisms? Why are individuals unable to evolve?

13. Compare the effects of disruptive, directional and stabilizing selection on the genetic makeup of a population.

14. Why do traits have to be heritable for evolution to affect them?