The link between mother and embryo through which nutrition, oxygen, and wastes pass is the
a. chorion.
b. placenta.
c. amnion.
d. yolk sac.
e. allantois.
B
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Image "C" indicates that only portions of the habitat are favorable to support growth. This type of population distribution, where growth occurs in grouping patterns, is called
A. nonselected distribution.
B. uniform distribution.
C. clumped distribution.
D. random distribution.
E. forced distribution.
What is not a main factor of change to bathygraphic features in the ocean?
a. Subsidence b. Erosion c. Sedimentation d. Uplift
The cells surrounding milk-producing cells in the
female mammary gland contract shortly after the female hears the cry of an infant. This is an example of a. a response that is not a behavior. b. instinctive behavior. c. imprinting behavior. d. learned behavior. e. a time-dependent form of learning.
The "fundamental niche" of an organism is defined as the
a) climatic conditions required for the organism to survive and reproduce b) range of environmental conditions under which the organism can survive and reproduce c) area that an organism occupies immediately after birth d) physical space that the organism occupies e) area in which the organism reproduces