After Reading the Paragraph Below, Answer the Questions That Follow

question 15

Multiple Choice

After reading the paragraph below, answer the questions that follow.
The graph below shows records of temperature (light gray line) and CO₂ (dark gray line) over the past 1,000 years. CO₂ is recorded in parts per million (ppm) .

-If the trends shown in the graph continue, how might this affect photosynthesis?

• A)Photorespiration may increase, leading to an increase in photosynthetic production of sugar.
• B)Photorespiration may increase, leading to a decrease in photosynthetic production of sugar.
• C)C₄ and CAM plants would be unable to photosynthesize.
• D)There would be no effect on photosynthesis, since CO₂ and temperature are stable.

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Definitions:

Node of Ranvier

A gap in the myelin sheath of a nerve fiber that facilitates rapid conduction of nerve impulses along the axon through saltatory conduction.

Convergence

The process or phenomenon where two or more separate species evolve similar traits independently, often due to similar environmental pressures.

Divergence

The process by which two or more related species become more different over time, often due to different environments or lifestyles.

Neural Circuit

A functional group of neurons, typically consisting of one or more afferent neurons, one or more interneurons, and one or more efferent neurons.