What Is One Way in Which the Cardiovascular System of a Mammal

question 30

Multiple Choice

What is one way in which the cardiovascular system of a mammal is different than that of an arthropod such as an insect?

• A)The heart of the mammal pumps blood into arteries, while the insect heart does not.
• B)Veins send blood to a mammal's lungs, while insect veins send blood to the heart.
• C)A mammal's blood is always contained inside vessels, while an insect's blood sometimes leaves the vessels.
• D)A mammal has a heart to pump blood, while an insect does not have a heart.

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Definitions:

Significance Level

The probability of rejecting the null hypothesis in a statistical test when it is actually true, usually set before the experiment.

Seat Belts

Devices aimed at protecting vehicle passengers from injurious motions that might occur in the event of an accident or abrupt halt.

Chi-Squared Test

A statistical test used to determine if there's a significant difference between the observed frequencies and the expected frequencies in one or more categories.

Nominal Variables

Categorical variables that represent qualitative data with no intrinsic ordering or ranking between the categories.