A tetraploid (i.e., four sets of chromosomes) plant species is typically , whereas a plant species with three sets of chromosomes is typically .

A. rare; common
B. large; small
C. fertile; infertile
D. small; large
E. infertile; fertile


C. fertile; infertile

Biology & Microbiology

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Oxytocin has specific effects on the

a. uterine musculature. b. voluntary muscles throughout the body. c. nervous tissue. d. target cells in the brain. e. target cells in the digestive tract.

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Why are population projection matrices so complicated?

A) because plant sizes are fixed over time B) because larger populations require more sophistication C) because fecundity is high in some species D) because some species can move back and forth between life stages

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Being a heterotroph means ________

A) making your own food from the sun B) making your own food from oxygen C) obtaining your food by eating other organisms D) obtaining your food by photosynthesis

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Which of the following types of microbes might be found in a boiling hot spring?

A) hyperthermophiles B) phototrophic bacteria C) methanogens D) non-thermophiles E) halophiles

Biology & Microbiology