A rule of thumb known as the morphospecies concept holds that:
A. morphology may vary within a species on
the basis of sex.
B. morphology is generally consistent within a
species.
C. morphology is not a reliable indicator of
common species.
D. morphology may vary within a species on
the basis of life stage.
B
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The secretions of the sweat and sebaceous glands provide ________ to the microbiota
A. water B. amino acids C. lipids D. All of the choices are correct.
What key words does the question contain and what do they mean?
What will be an ideal response?
Stem cells are produced and developed in the
A) bone marrow. B) brain. C) liver. D) stems of plants.
Fungi are found associated with the earliest plant fossils. Fungi may have helped plants become terrestrial by
A) forming associations to obtain water and minerals. B) stocking the soil with organic matter. C) providing simple organic compounds in return for sugars. D) killing the bacterial enemies of plants.