How Does Loading of Most Carbohydrates into Companion Cells at a Source

question 54

Multiple Choice

How does loading of most carbohydrates into companion cells at a source occur?

• A) by diffusion of water from the xylem
• B) by osmosis
• C) by active transport
• D) by proton pumping

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Definitions:

Rational

The quality of being based on or in accordance with reason or logic.

Indifference Curves

A graph representing different bundles of goods between which a consumer is indifferent, showing equal levels of utility.

Preference Map

A relationship between two variables, X and Y, in which a decrease in X is associated with a decrease in Y, and an increase in X is associated with an increase in Y.

Indifference Curve

a graph showing different combinations of two goods that give a consumer equal satisfaction and utility.