ture with prisms that run perpendicular to the crown or tip. Enamel
prism patterns can have both taxonomic and evolutionary significance.
Tooth and tusk ivory can be carved into an almost infinite variety of
shapes and objects. A small example of carved ivory objects are small
statuary, netsukes, jewelry, flatware handles, furniture inlays, and piano
keys. Additionally, wart hog tusks, and teeth from sperm whales, killer
whales, and hippos can also be scrimshawed or superficially carved, thus
retaining their original shapes as morphologically recognizable objects.
The identification of ivory and ivory substitutes is based on the
physical and chemical class characteristics of these materials. A com-
mon approach to identification is to use the macroscopic and micro-
scopic physical characteristics of ivory in combination with a simple
chemical test using ultraviolet light.- In line 5, what does the term discretemost nearly mean?
a. tactful
b.distinct
c. careful
d.prudent
e.judicious - Which of the following titles is most appropriate for this passage?
a. Ivory: An Endangered Species
b.Elephants, Ivory, and Widespread Hunting in Africa
c. Ivory: Is It Organic or Inorganic?
d.Uncovering the Aspects of Natural Ivory
e.Scrimshaw: A Study of the Art of Ivory Carving - The word scrimshawedin line 12 and line 52 most nearly means
a. floated.
b.waxed.
c. carved.
d.sunk.
e.buoyed. - Which of the following choices is NOT part of the physical
structure of teeth?
a. pulp cavity
b.dentine
c. cementum
d.tusk
e.enamel
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