When Pathogenic Fungi Are Found Growing on the Roots of Grape

question 55

Multiple Choice

When pathogenic fungi are found growing on the roots of grape vines, grape farmers sometimes respond by covering the ground around their vines with plastic sheeting and pumping a gaseous fungicide into the soil. The most important concern of grape farmers who engage in this practice should be that the ________.

• A) fungicide might also kill the native yeasts residing on the surfaces of the grapes
• B) lichens growing on the vines' branches are not harmed
• C) fungicide might also kill mycorrhizae
• D) sheeting is transparent so that photosynthesis can continue

---

Definitions:

Fixed Costs

Fixed costs that are unaffected by the amount of goods produced or sold, like rent, wages, and insurance charges.

Rent

A periodic payment made for the use of land, a building, or other property.

Insurance

A financial product providing protection against possible financial losses or damages, involving regular payments in exchange for the promise of compensation under certain conditions.

Economies of Scale

The cost advantages that enterprises obtain due to their scale of operation, resulting in cost per unit of output decreasing with increasing scale.