An essential element categorized in elements that can alter the osmotic potential of a cell will be:

1. Nitrogen 2. Phosphorus
3. Molybdenum 4. Potassium

Subtopic:  Criteria for Essentiality of Elements |
 86%
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Identify the element that is not obtained by terrestrial plants primarily from soil?

1. Potassium 2. Nitrogen
3. Phosphorus 4. Carbon
Subtopic:  Criteria for Essentiality of Elements |
 66%
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A plant requires magnesium mainly for:

1. DNA replication 2. Synthesizing enzymes
3. Synthesizing hormones 4. Synthesizing chlorophyll
Subtopic:  Mineral Function |
 85%
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Which of the following elements is a constituent of vitamins such as thiamine, biotin and Coenzyme A?

1. Calcium 2. Sulfur
3. Iron 4. Phosphorus
Subtopic:  Mineral Function |
 77%
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The two elements required for splitting of water to liberate oxygen during photosynthesis are:
1. Manganese and Chlorine
2. Manganese and Boron
3. Copper and Chlorine
4. Molybdenum and Magnesium

Subtopic:  Mineral Function |
 88%
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Identify the element required by plants for utilization of calcium and pollen germination:

1. Iron 2. Sulfur
3. Boron 4. Zinc
Subtopic:  Mineral Function |
 90%
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The deficiency symptoms of which of the following tends to first appear in young tissues?

1. Nitrogen 2. Potassium
3. Calcium 4. Magnesium
Subtopic:  Mineral Deficiency & Toxicity |
 80%
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The deficiency of nitrogen or molybdenum can cause all except:
1. Chlorosis
2. Inhibition of cell division
3. Necrosis of leaf tissue
4. Delay in flowering

Subtopic:  Mineral Function |
 63%
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Any mineral ion concentration is considered toxic to plants if it reduces the dry weight of tissues by:

1. 5 % 2. 10 %
3. 25 % 4. 50 %
Subtopic:  Mineral Deficiency & Toxicity |
 90%
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Symptoms of excess of manganese may actually be the deficiency symptoms of all the following except:

1. Iron 2. Magnesium
3. Calcium 4. Sulfur
Subtopic:  Mineral Deficiency & Toxicity |
 75%
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