In a Tide Pool, a Student Encounters an Organism with a Hard

question 37

Multiple Choice

In a tide pool, a student encounters an organism with a hard outer covering that contains a large amount calcium carbonate, an open circulatory system, and gills. The organism could potentially be a crab, a shrimp, a barnacle, or a bivalve. The presence of which of the following structures would allow for the most definitive identification of the organism?

• A) a mantle
• B) a heart
• C) a body cavity
• D) a filter-feeding apparatus

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Definitions:

Standard Deviation

A numerical value calculating how much the dataset deviates from its average, illustrating the breadth of data distribution.

Confidence Interval

A range of values derived from sample data that is likely to contain the true value of an unknown population parameter.

Population Standard Deviation

A measure of the dispersion or spread of all values in a given population, quantifying how much the values differ from the population mean.

Average Expense

An average amount of money spent, typically calculated over a specific period of time, reflecting common expenditure patterns.