Which Is the Best Description of the Mutual Benefit to Both

question 46

Multiple Choice

Which is the best description of the mutual benefit to both species found in a lichen?

• A) The autotroph provides food and the heterotroph provides water and minerals.
• B) The autotroph prevents dehydration and the heterotroph provides energy.
• C) The autotroph provides water and minerals and the heterotroph prevents dehydration.
• D) The heterotroph protects the autotroph from predation.
• E) The autotroph produces antibiotics to ward off infection to the heterotroph by bacteria.

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Definitions:

Sharpe Measure

An alternative term for the Sharpe Ratio, providing an assessment of an investment's risk-adjusted return by calculating the excess return per unit of risk.

Beta

A tool for appraising the degree of volatility or systemic risk involved in a security or portfolio relative to the market at large.

Treynor Measure

A ratio used to evaluate the returns of a portfolio or investment adjusted for risk, taking into account the risk-free rate and market volatility.

Beta

A measure of a stock's volatility in relation to the overall market.