This Group of Deuterostomes Is Characterized by a Water Vascular

question 28

Multiple Choice

This group of deuterostomes is characterized by a water vascular system and calcium carbonate endoskeletons.

• A) hominins
• B) chondrichthyes
• C) birds
• D) chordates
• E) echinoderms

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Definitions:

Independent Variables

In experimental research, the variables that are manipulated or changed by the researcher to determine their effect on dependent variables.

Causality

The relationship between cause and effect, where one event (the cause) leads to the outcome or consequence (the effect).

Status Variables

Variables that describe or categorize individuals based on their social or professional position.

Independent Variable

The variable in an experiment that is manipulated or changed by the researcher to observe its effects on the dependent variable.