When the Circular Muscles of a Segment in an Earthworm

question 75

Multiple Choice

When the circular muscles of a segment in an earthworm contract, that compartment _______, and when the longitudinal muscles of a segment contract, that compartment _______.

• A) shortens and bulges outward; narrows and elongates
• B) narrows and elongates; shortens and bulges outward
• C) anchors the earthworm; projects forward
• D) pulls other segments forward; projects forward
• E) lengthens; shortens

---

Definitions:

Inferential Statistics

A branch of statistics that allows one to make predictions or inferences about a population based on a sample of data taken from that population and analyzed through the use of statistical tests.

Generalizability

The extent to which findings from a study can be applied or extended to broader contexts outside the specific study conditions.

Research Study

A systematic investigation into and study of materials and sources in order to establish facts and reach new conclusions.

Population

The whole number of inhabitants or residents in a particular area or region, often studied in terms of size, density, and distribution.