Figure 371 Shows the Results of a Study to Determine the the Effect

question 50

Multiple Choice

Figure 37.1 shows the results of a study to determine the effect of soil air spaces on plant growth.

Figure 37.1
-The best explanation for the shape of the growth response curve in figure 37.1 is that

• A)the plant requires air in the soil for photosynthesis.
• B)the roots are able to absorb more nitrogen (N2)in high levels of air.
• C)most of the decrease in weight at low air levels is due to transpiration from the leaves.
• D)increased soil air produces more root mass in the soil but does not affect the top stems and leaves.
• E)the roots require oxygen for respiration and growth.

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Definitions:

Electron Transport Chain

A series of complexes that transfer electrons through a membrane within mitochondria to form a gradient used to produce ATP.

Citric Acid Cycle

A key metabolic pathway that integrates the energy production from carbohydrates, fats, and proteins in aerobic organisms.

ATP

Adenosine triphosphate, a molecule that carries energy within cells, essential for energy transfer and metabolism.

Sequential System

A system that processes data or events in a specific order, one at a time.