The Organization of an Ecosystem into Levels Through Which Energy

question 54

Multiple Choice

The organization of an ecosystem into levels through which energy flows as the organisms at each level consume energy from the bodies of the organisms in levels below is the:

• A)photosynthesis
• B)biome
• C)ecotone
• D)food web

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Definitions:

Pulmonary Veins

Blood vessels that carry oxygenated blood from the lungs to the left atrium of the heart.

Pulmonary Circuit

The route of blood flow from the heart to the lungs and back, during which blood becomes oxygen-rich.

Peripheral Resistance

The resistance of the arteries to blood flow. As the arteries constrict, the resistance increases and blood pressure rises.

Cardiac Output

The volume of blood the heart pumps through the circulatory system in one minute, a crucial parameter for determining heart efficiency.