Which of the following elements helps in maintaining the structure of ribosomes?

1. Magnesium

2. Zinc

3. Copper

4. Molybdenum

Subtopic:  Mineral Function |
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In which of the following forms is iron absorbed by plants?

1. Ferric
2. Ferrous
3. Free element
4. Both ferric and ferrous

Subtopic:  Mineral Function |
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Which of the following elements is responsible for maintaining turgor in cells ?
1. Magnesium
2. Sodium
3. Potassium
4. Calcium

 

Subtopic:  Mineral Function |
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The most abundant intracellular cation is :
1. Ca2+
2. H+
3. K+
4. Na+

Subtopic:  Mineral Function |
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Best defined function of manganese in green plants is

1. Photolysis of water

2. Calvin cycle

3. Nitrogen fixation

4. Water absorption

Subtopic:  Mineral Function |
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Which one of the following is essential for
photolysis of water ?
1. Boron
2. Manganese
3. Zinc
4. Copper

Subtopic:  Mineral Function |
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An element playing important role in nitrogen fixation is

1. molybdenum

2. copper

3. manganese

4. zinc

 

Subtopic:  Mineral Function |
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Manganese is required in
1. nucleic acid synthesis
2. plant cell wall formation
3. photolysis of water during photosynthesis
4. chlorophyll synthesis

Subtopic:  Mineral Function |
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A plant requires magnesium for :

1. holding cells together

2. protein synthesis

3. chlorophyll synthesis

4. cell wall development

Subtopic:  Mineral Function |
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Farmers in a particular region were concerned that pre-mature yellowing of leaves of a pulse crop might cause decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?

1. Frequent irrigation of the crop

2. Treatment of the paints with cytokinins alongwith a small dose of nitrogenous fertilizer

3. Removal of all yellow leaves and spraying the remaining green leaves with 2,4,5-trichlorophenoxy acetic acid

4. Application of iron and magnesium to promote synthesis of chlorophyll

Subtopic:  Mineral Function |
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