A Woman Observes a Hawk Perched in the Branches of a Pine

question 168

Multiple Choice

A woman observes a hawk perched in the branches of a pine tree. Suddenly, the hawk swoops down and catches a chipmunk that has been eating sunflower seeds at the woman's bird feeder. The hawk returns to its nest, which is in a nearby oak tree. Through this scenario, what can you tell about the niches of the organisms involved?

• A)Oak trees or pine trees can serve as suitable shelter for hawks.
• B)Hawks prey on chipmunks.
• C)Chipmunks serve as food sources for hawks.
• D)Chipmunks feed on seeds in their environments.
• E)All of these choices are correct.

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Definitions:

Thrombocytopenia

Condition in which there is an abnormally small number of platelets in the blood.

Prothrombinase

An enzyme complex involved in the blood clotting process that converts prothrombin to thrombin.

Prothrombin

A protein present in blood plasma that is converted into active thrombin during coagulation.

Thrombin

A blood plasma enzyme responsible for blood clot formation by changing fibrinogen into fibrin.