When an earthworm is underground, which type of receptors will relay information on directional
movement?
a. lateral line organs
b. otoliths
c. cristae
d. stereocilia
e. statocysts
E
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Which pigment(s) is (are) characteristic of
chlorophytes? a. chlorophyll a b. phycobilins c. chlorophyll b d. phycoerythrins e. chlorophylls a and b
Tears drain into the
a. nasal cavity. b. anterior chamber of the eye. c. corneal space. d. conjunctiva. e. optic nerve.
Macromolecules that are used by all organisms to store hereditary information are called:
A. ribosomal RNA molecules. B. transfer RNA molecules. C. messenger RNA molecules. D. DNA molecules. E. proteins.
Life extension:
a. works in insects but could not work in humans. b. can be achieved in species by selectively breeding individuals with the earliest age of maturity. d. has been achieved using laboratory selection for delayed reproduction.