Which of the following follows the correct sequence for a sound (a vibration) traveling into the mammalian ear?
A. pinna, tympanum, ossicles of middle ear, oval window, basilar membrane, hair cell
B. tympanum, pinna, ossicles of middle ear, hair cell, oval window, basilar membrane
C. pinna, ossicles of middle ear, tympanum, basilar membrane, oval window, hair cell
D. hair cell, pinna, basilar membrane, ossicles of middle ear, tympanum, oval window
E. pinna, oval window, tympanum, basilar membrane, ossicles of middle ear, hair cell
A. pinna, tympanum, ossicles of middle ear, oval window, basilar membrane, hair cell
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Features that contributed to success on land include __________ and __________ (two types of
vascular tissues). Fill in the blank(s) with the appropriate word(s).
Nitrification
a. converts ammonium into nitrates. b. reduces nitrates to nitrites. c. converts nitrogenous compounds into free nitrogen. d. converts atmospheric nitrogen to ammonia. e. reduces ammonia to ammonium
Sexual dimorphism has arisen as a result of
a. stabilizing selection. b. heterozygote superiority. c. kin selection. d. sexual selection. e. directional selection.
Water moves from a region of ____ water potential to a region of ____water potential
a. more positive; less positive b. less positive; more positive c. less negative; more negative d. more negative; less negative e. more negative; zero