Periwinkle Snails Prefer to Feed on the Green Alga Enteromorpha

question 2

Multiple Choice

Periwinkle snails prefer to feed on the green alga Enteromorpha . In tide pools, Enteromorpha , which other alga species, while in areas exposed at low tide, the red alga Chondrus outcompetes Enteromorpha . How did these feeding and competing interactions affect the algal populations?

• A) Periwinkles decreased species richness in both tide pools and exposed areas.
• B) Periwinkles eliminated all of the less dominant algal species.
• C) Periwinkles eliminated the dominant algae entirely.
• D) Periwinkles decreased species richness when Enteromorpha is dominant, but increased species richness when Enteromorpha is competitively inferior.
• E) Periwinkles increased species richness when Enteromorpha is dominant, but decreased species richness when Enteromorpha is competitively inferior.

---

Definitions:

Hierarchical Taxonomy

A hierarchical taxonomy is a system of classification that organizes entities or concepts into groups and subgroups based on similarities and differences, usually in a ranked or layered structure.

Component Behaviors

are the individual actions or reactions that make up a larger, complex process or behavior pattern, often analyzed in psychology and organizational behavior.

Narrow Behavior Categories

Refers to highly specific classifications of actions or responses that are considered in psychological studies or organizational assessments.

Empowering Decision Procedure

A process that allows individuals or groups to have more control and influence over decisions that affect them, often encouraging participation and responsibility.