For the Following Questions Consider These Characteristics

question 77

Multiple Choice

For the following questions consider these characteristics:
I. radial symmetry
II. bilateral symmetry
III. true tissues
IV. complete digestive tract
-Diopatra ornata is a segmented worm that builds tubes in the sand. These worms would be expected to have

• A) I only.
• B) I and III only.
• C) II and III only.
• D) II, III, and IV only.

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Definitions:

Experimental Control

A component of scientific experiments where variables are kept constant to accurately assess the effect of the independent variable on the dependent variable.

Random Assignment

A method used in experiments to distribute participants randomly across various groups to ensure each group is similar at the start of the experiment.

Extraneous Variables

Variables other than the independent variable that may affect the outcome of an experiment, potentially confounding the results if not controlled.

Ethnographic Research

A qualitative research method focused on studying cultures and communities through direct observation, participation, and immersion.