What Is the Main Force by Which Most of the Water

question 60

Multiple Choice

What is the main force by which most of the water within xylem vessels moves toward the top of a tree?

• A) active transport of ions into the stele
• B) evaporation of water through stoma
• C) the force of root pressure
• D) osmosis in the root

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Definitions:

Efficient Portfolio

Provide the highest expected return for any degree of risk. The efficient portfolio is that which provides the lowest degree of risk for any expected return.

Expected Return

Expected Return is the anticipated profit or loss a portfolio generates over a specific period, based on historical or forecasted performance.

Risk

The exposure to uncertainty and the potential for losing something of value, in finance typically referring to the uncertainty in investment returns.

Perfectly Negatively Correlated

A statistical measure indicating that two variables move in opposite directions with a correlation coefficient of -1.