Which Events and Features Are Correctly Associated with the Roots

question 56

Multiple Choice

Which events and features are correctly associated with the roots during the pressure-flow model of phloem transport?

• A) Sugar is stored in the sink. Cells use the sugar for cellular respiration. Water exits by osmosis and returns to the xylem.
• B) Sugars are stored in the source. Cells use the sugar for cellular respiration. Water exits by osmosis and returns to the xylem.
• C) Sugar is stored in the sink. Cells use the sugar for photosynthesis. Water exits by osmosis and returns to the xylem.
• D) Sugar is stored in the sink. Cells use the sugar for cellular respiration. Water exits by diffusion and returns to the phloem.
• E) Sugar is stored in the source. Cells use the sugar for photosynthesis. Water exits by osmosis and returns to the xylem.

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Retail Trade

The selling of goods and services directly to consumers, typically in small quantities.

Marginal Labor Cost

The additional cost incurred by hiring one more unit of labor or the cost of producing one additional unit of output with an additional unit of labor.

Wage Rate

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