Which plant function is NOT typically a main task performed by stems?

a. mechanical support
b. the storage of water, nutrients and sugars
c. energy capture
d. routes for vascular tissues
e. new growth


ANSWER: c

Biology & Microbiology

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The function of fruit is to ________

a. provide food for the embryo sporophyte b. attract pollinators c. provide food for the seedling after germination d. attract animals to disperse seeds

Biology & Microbiology

A kidney dialysis machine removes solutes from the blood by means of:

a. osmosis b. exocytosis c. diffusion d. active transport e. bulk flow

Biology & Microbiology

Hydrogenation is a chemical process that

a. turns liquid oil to solid fats. b. turns amino acids into proteins. c. turns DNA into lipids. d. creates stable alternative energy sources. e. does none of these.

Biology & Microbiology

Imagine that you are studying a very large population of moths that is isolated from gene flow. A single gene controls wing color. Half of the moths have white-spotted wings (genotype WW or Ww), and half of the moths have plain brown wings (ww). There

are no new mutations, individuals mate randomly, and there is no natural selection on wing color. How will p, the frequency of the dominant allele, change over time? A) p will increase; the dominant allele will eventually take over and become most common in the population. B) p will neither increase nor decrease; it will remain more or less constant under the conditions described. C) p will decrease because of genetic drift. D) p will fluctuate rapidly and randomly because of genetic drift.

Biology & Microbiology