Vascular plant bodies typically consist of a(n) ____ shoot system and a ____ root system
a. photosynthetic; photosynthetic
b. nonphotosynthetic; photosynthetic
c. photosynthetic; nonphotosynthetic
d. nonphotosynthetic; nonphotosynthetic
e. autotrophic; heterotrophic
C
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The developmental pathway of each whorl of a developing Arabidopsis flower is determined by (Select all correct choices):
A. the number of meristem cells in each whorl. B. the specific combination of genes active in each whorl. C. the specific combination of activities in each whorl. D. the specific combination of transcription factors present in each whorl. E. the specific combination of cell types in each whorl.
DNA wrapped twice around a protein core forms a ____
a. chromosome b. gene c. chromatin d. nucleosome e. chromatid
Where does the C4 cycle get its name?
A) It is a four-step process. B) The first product in the cycle has four carbons. C) PEP is a four-carbon molecule. D) Only four carbons are used in the cycle. E) Four CO2 molecules are released.
Which one of the following expressions from the logistic equation (dN/dt = rN ((K - N)/K) represents the proportion of unused resources remaining for use by the population?
A. the carrying capacity (K) B. the growth rate (dN/dt) C. the biotic potential (rN) D. the population size (N) E. (K - N)/K