The protist that is most closely related to animals is the:
a. amoeba
b. choanoflagellate
c. dinoflagellate
d. euglenoid
e. paramecium
b
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The way the pancreas regulates glucose levels in the blood stream follows ________.
A. a positive feedback mechanism B. instructions from the brain C. a negative feedback mechanism D. The pancreas is not involved in regulating glucose levels in the blood.
Which one of the following divisions of the nervous system predominates during the relaxed state?
A) sensory division B) sympathetic division C) somatic division D) parasympathetic division E) endocrine division
Which habitat would be expected to have the greatest species richness?
a. an island b. a polar habitat c. an ecotone d. an agricultural habitat e. a mountain top
A botanist discovers a new species of plant in a tropical rain forest. After observing its anatomy and life cycle, the following characteristics are noted: flagellated sperm, xylem with tracheids, separate gametophyte and sporophyte generations with the sporophyte dominant, and no seeds. This plant is probably most closely related to
A) mosses. B) charophytes. C) ferns. D) gymnosperms. E) flowering plants.