When You Are Holding Your Hand Out at Arm's Length

question 44

Multiple Choice

When you are holding your hand out at arm's length and looking at your thumb, the image of your thumb falls on ______ on each of your retinae.

• A)corresponding points
• B)noncorresponding points
• C)the horoptic perimeter
• D)the locus of disparity

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Definitions:

Crustaceans

Members of a subphylum that includes lobsters, crabs, shrimp, barnacles, and their relatives.

Echinoderms

A phylum of marine animals characterized by radial symmetry, a calcareous skeleton, and a water vascular system; includes starfish, sea urchins, and sea cucumbers.

Parasitizes

Describes the action of living as a parasite in or on another organism, exploiting the host for sustenance without mutual benefit.

Biramous Appendages

Appendages with two jointed branches extending from their base. Compare with uniramous appendages.