Identify the two systems that work together to control our internal organs.
A. endocrine system
B. integumentary system
C. nervous system
D. cardiovascular system
Answer:
A. endocrine system
C. nervous system
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If the groups we recognize as different human races represented genetically isolated populations, we would expect to see (select all that apply):
A. more genetic variation between groups than we see within groups. B. more genetic variation within groups than we see between groups. C. no clear pattern of genetic variationin some regions, we would see more variation within than among groups, and in some regions we would see the opposite. D. a correlation between the amount of genetic variation between groups and the length of time the groups have been isolated from one another. E. None of the above.
Which of the following germ layer-structure is mismatched?
A. mesoderm-notochord B. endoderm-lungs or respiratory tube C. ectoderm-epidermis D. mesoderm-digestive tract E. ectoderm-brain
Most vessels that feed abdominal organs are branches off the ____
a. ascending aorta b. abdominal aorta c. thoracic aorta d. superior vena cava e. inferior vena cava
The primary problem animals faced in adapting to life on land was:a
finding a mate in the new environment. b. being able to move around in the new environment. c. the presence of predators, which was not a problem in the ocean. d. the dry atmosphere. e. acquiring enough oxygen.