The senses of equilibrium and balance derive from the
A. cochlea.
B. semicircular canals.
C. vestibule.
D. cochlea and vestibule.
E. semicircular canals and vestibule.
E. semicircular canals and vestibule.
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In humans, if non-disjunction led to an individual with a genotype of XO, that person would
A. be female because each cell lacks a Y chromosome. B. be male because each cell has only one X chromosome. C. display both male and female characteristics. D. not survive.
Glucagon is produced by the
a. adrenal cortex. b. adrenal medulla. c. thyroid. d. kidneys. e. pancreas.
What type of reproductive isolation would include closely related species of orchids that never mate in the wild because they bloom at different times?
What will be an ideal response?
Plants are photosynthetic autotrophs. What does this mean?
A. The make their own food from organic materials. B. They require pre-formed organic compounds. C. They use light energy to drive the synthesis of organic molecules. D. They are considered to be the consumers of the biosphere.