A Type of Bacteria Colonizes on the Surface of a Leaf

question 16

Multiple Choice

A type of bacteria colonizes on the surface of a leaf, where it obtains nutrition from the leaf's nonliving, waxy covering without harming the plant, and inhibits the growth of other microbes that are plant pathogens. If this bacteria gains access to the inside of a leaf, however, it causes a fatal disease in the plant. Once the plant dies, the bacterium and its offspring decompose the plant. What is the correct sequence of ecological roles played by the bacterium in the situation described here?

• A) nutrient recycler, commensalist, pathogen
• B) mutualist, commensalist, pathogen
• C) mutualist, pathogen, nutrient recycler
• D) nutrient recycler, mutualist, primary producer

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Definitions:

Cultural Norms

The shared expectations and rules that guide behavior of people within social groups.

Feminine Trait

Characteristics traditionally associated with women and femininity, such as empathy, nurturance, and sensitivity.

Gender Typing

The process by which individuals come to learn the gender roles considered appropriate in their society or culture.

Masculine

Refers to qualities or attributes regarded traditionally as characteristic of men, such as strength or assertiveness.