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41. The corpus luteum secretes a hormone that pre-
pares the uterus for implantation. This hormone
is most likely
(A) a luteinizing hormone
(B) a follicle-stimulating hormone
(C) estrogen
(D) progesterone
(E) chorionic gonadotropin
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Lesson 9
258
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ARCO
■ SAT II Subject Tests
42. The graph below depicts the population trend in
a predator-prey system. Assuming this is a stable
system (free from outside influences), which of
the following statements is most likely true?
44. Several general characteristics of the an-
giosperms allow for the separation of this class
of plants into two subclasses. Properties that
differentiate these subclasses include each of
the following EXCEPT
(A) the number of seed leaves
(B) arrangement of vascular tissue in the stem
(C) petal arrangement
(D) color scheme of petals
(E) vein structure of leaves
45. Which of the following hormones is NOT cor-
rectly matched with a known function of that
hormone?
(A) Insulin – Glucose metabolism
(B) Calcitonin – Calcium metabolism
(C) Parathyroid hormone – Calcium metabolism
(D) Aldosterone – Electrolyte balance
(E) Erythropoietin – White blood cell regu-
lation
(A) The solid line most likely represents the
predator population trend.
(B) The populations of predator and prey
reach peak levels concomitantly.
(C) Four years after the population of preda-
tor begins to decrease, there is a dramatic
decrease in the population of prey.