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10 Cards in this Set
- Front
- Back
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Pathogens and a failure to separate industrial waste (e.g. heavy metals) from human waste can complicate the use of sewage in agriculture. |
True |
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Southern corn leaf blight (1970-71) ____. |
Is an example of genetic vulnerability and destroyed almost all of the corn crop in Illinois and Indiana |
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Among common domesticated livestock, manure from ____ contains the lowest level of water, which makes it more affordable to transport for use as a fertilizer |
Chickens |
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Plants that use the C3 photosynthetic pathway do well under relatively hot/dry conditions compared to plants using the C4 pathway |
False |
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After land is put into cultivation (i.e. tilled) loss of soil organic matter happens ____. |
Rapidly at first, then losses occur more slowly |
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Phosphorus is an important component of many structures in plant and animal cells, including membranes, nucleic acids, ATP, amino acids, and chlorophyll |
False |
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In a mass-selected plant variety, overall genetic diversity within the variety is greater than that of any individual seed in the variety. |
True |
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While the crop production industry has narrowed its genetic basis over time, the livestock industry, which relies more on cross-breeding, has maintained a high level of diversity. |
False |
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Of the major grains we rely upon in the USA, corn and soybean are native species, which is part of why they are commonly planted as a rotation in the USA. |
False |
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Polyploid plants often produce larger seeds and fruits than their normal diploid ancestors because of inbreeding depression |
False |
