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Science TAKS 2009-2010. Objective 3 What is it? What do I study? How many questions?

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Presentation on theme: "Science TAKS 2009-2010. Objective 3 What is it? What do I study? How many questions?"— Presentation transcript:

1 Science TAKS 2009-2010

2 Objective 3 What is it? What do I study? How many questions?

3 Objective 3 Interdependence of organisms and their environment In other words, ecology which is the study of living things and their interaction with the environment. There are eight questions on the test.

4 Objective 3 How does using killed or weakened bacteria in an immunization help the body prevent infections? F Antibodies are formed that fight those types of bacteria. G The body develops a fever that kills beneficial bacteria. H Bacterial reproductive cycles are disrupted. J Bacteria-fighting viruses are activated

5 Objective 3 According to this phylogenetic tree, which organism is most closely related to Organism V? A Q B U C W D X

6 Objective 3 At one time large herds of bison roamed across the Great Plains. Brown-headed cowbirds often followed the bison, capturing and eating insects that scattered as the bison walked through the grasses. This relationship between the bison and the cowbird was — F predatory G competitive H commensal J parasitic

7 Objective 3 Some plants have a hard waxy coating on their leaves that helps prevent water loss. In which environment do these plants most likely grow? A Desert B Marine C Grassland D Rain forest

8 Objective 3 A food web is shown above. If the rabbit population increases, which of the following is most likely to happen soon afterward? A The deer population will increase. B The plant population will decrease. C Different birds will move into the area. D The insect population will be eliminated


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