Biology E/M Subject Test
255
ARCO
■
SAT II Subject Tests
w w w . p e t e r s o n s . c o m / a r c o
17. Which of the following
best describes the sap-
wood of a woody dicot?
(A) Cork cambium
(B) Peripheral, more recent rings of xylem
(C) Central area of pith
(D) Area
filled with pigments, gums, and resins
(E) Inner, older rings of xylem
18. Impulses carried from the central nervous sys-
tem to the effector
organs are conducted via the
(A) Schwann cells
(B) dendrites
(C) axon
(D) cerebrospinal fluid
(E) myelin sheath
19. The biome dominated by conifers, such as
spruces
and firs, is the
(A) chaparral
(B) deciduous forest
(C) tropical rain forest
(D) tundra
(E) taiga
20. Inheritance of color
in a certain plant is known
to follow simple Mendelian rules. Green leaf
color is dominant and yellow leaf color is reces-
sive to green. If a homozygous green-leafed plant
is mated with a
homozygous yellow-leafed plant,
what proportion of offspring (F
1
generation)
would be expected to possess yellow leaves?
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