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93. Differentiation of cells as a result of location
is best termed
(A) integration
(B) ingression
(C) restriction
(D) induction
(E) morphogenesis
94. If ectoderm from the wing area is supplanted
for the ectoderm covering leg mesoderm, which
of the following is most likely to occur? Use
the above experiments as a guide.
(A) Ectoderm will produce scales.
(B) Ectoderm will produce wing feathers.
(C) Ectoderm will produce leg feathers.
(D) Ectoderm will produce no feathers.
(E) Ectoderm will produce both scales and
wing feathers.
Question 95
The curves below illustrate the early development of a young mammal. The normal fully developed adult
of this species weighs 8 kilograms and maintains a core temperature of 99
°F.
95. Based on the data presented for this animal,
which of the following is a reasonable con-
clusion?
(A) Temperature regulation occurs as the
animal’s activity level increases.
(B) Weight increases linearly over the first
three months of development.
(C) Maximum weight is attained after adult
temperature regulation is achieved.
(D) Adult weight is attained prior to adult
temperature regulation.
(E) Core temperature and body weight are
inversely related over the first three
months of development.
STOP
IF YOU FINISH BEFORE TIME IS CALLED,
YOU MAY CHECK YOUR WORK ON THIS
TEST ONLY. DO NOT WORK ON ANY
OTHER TEST IN THIS BOOK.

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Lesson 9
268
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