The switching between asexual and sexual

reproduction by water fleas is controlled by



a. epistasis.
b. pleiotropy.
c. incomplete dominance.
d. codominant inheritance.
e. environmental effects


E

Biology & Microbiology

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Which of the following is not an example of suction feeding?

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Increased concentrations of CO2 (5% to 10%) and approximately 15% O2 produce an environ-mental condition that best suits which type of organism?

a. Aerobes b. Anaerobes c. Capnophiles d. Microaerophiles

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Stomata open when ________

a. solute concentration inside guard cells is low b. guard cells swell c. water is scarce d. guard cells shrink

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The pyramid of energy illustrates

a. the first law of thermodynamics. b. the diminishing of usable energy as it is transferred through an ecosystem. c. that energy can be recycled. d. the biological magnification of materials in an ecosystem. e. the diminishing number of organisms at each trophic level

Biology & Microbiology