In Many Plants, It Is Possible to Peel Off the Lower

question 99

Multiple Choice

In many plants, it is possible to peel off the lower epidermis of a leaf without disturbing the photosynthetic mesophyll cells, thereby exposing the mesophyll directly to the air. What would you expect the immediate (seconds to minutes) response of photosynthesis to be? What would you expect the longer-term (minutes to hours) response of photosynthesis to be?

• A)immediate increase, long-term decrease
• B)immediate decrease, long-term increase
• C)no change immediately, long-term decrease
• D)no change immediately, long-term increase

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Definitions:

Net Operating Income

A financial metric that calculates a company's profit after subtracting operating expenses, excluding taxes and interest.

Degree Of Operating Leverage

A measure, at a given level of sales, of how a percentage change in sales volume will affect profits. The degree of operating leverage is computed by dividing contribution margin by net operating income.

Variable Costs

Costs that change in proportion to the level of activity or volume of output produced.

Fixed Costs

Overheads that are unaffected by the quantity of output or sales, for example, tenancy costs, wages for staff, and indemnity expenses.