The Bones of the Fingers and Toes of Au

question 14

Multiple Choice

The bones of the fingers and toes of Au. afarensis are slightly curved, and the toes are much longer than the toes of modern human beings. This suggests to paleoanthropologists that

• A) the bipedalism of Au. afarensis was even more efficient than that of modern human beings.
• B) Au. afarensis did not move with a full striding gait, as later hominins did.
• C) Au. afarensis lost tree-climbing ability.
• D) the bipedalism of Au. afarensis was remarkably inefficient.

Understand the basic body structures and modes of locomotion in cnidarians.

Identify and classify different kinds of parasitic and free-living flatworms.

Recognize features and physiological adaptations of tapeworms, including their head region and flame cells.

Differentiate between major phyla based on distinguishing characteristics, including molluscs, annelids, and arthropods.

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Definitions:

Goiter

An abnormal enlargement of the thyroid gland, which can cause swelling in the neck and is usually due to iodine deficiency or thyroid disease.

Thyroid

A gland in the neck that produces hormones regulating metabolism, energy level, and overall bodily functions.

Juvenile Hypothyroidism

A condition in children characterized by insufficient production of thyroid hormones, which can lead to delayed growth, intellectual development, and other health issues.

Dry Skin

A condition where the skin lacks moisture in its outer layer, leading to itchiness, flaking, and sometimes redness.