Q. No.Plants can be grown in (Select the incorrect option)
1. Soil with essential nutrients
2. Water with essential nutrients
3. Either water or soil with essential nutrients
4. Water or soil without essential nutrients
1. Soil with essential nutrients
2. Water with essential nutrients
3. Either water or soil with essential nutrients
4. Water or soil without essential nutrients
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Identify the incorrectly matched co-factor in Column I with enzymes in Column II:
|
COLUMN I |
COLUMN II |
|
|
1. |
Zinc |
Alcohol dehydrogenase |
|
2. |
Magnesium |
Cytochrome oxidase |
|
3. |
Molybdenum |
Nitrate reductase |
|
4. |
Iron |
Nitrogenase |
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The process of protein synthesis will be adversely affected by the deficiency of which of the following elements in plants despite adequate availability of nitrogen?
1. Potassium
2. Boron
3. Chlorine
4. Copper
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Identify the incorrectly matched essential mineral nutrient in plants [Column I] with function [Column II]:
|
COLUMN I |
COLUMN II |
|
|
1. |
Zinc |
Synthesis of auxin |
|
2. |
Copper |
Activation of enzymes of respiration |
|
3. |
Boron |
Carbohydrate translocation |
|
4. |
Chlorine |
Ionic balance |
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A symptom common to the deficiency of Ca, Mg, Cu and K in plants is:
1. Chlorosis
2. Inhibition of cell division
3. Necrosis
4. Delay in flowering
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Majority of the nutrients that are essential for the growth and development of plants become available to the roots due to:
1. Microbial actions in the soil
2. Wet deposition from the atmosphere
3. Addition of fertilizers
4. Weathering and breakdown of rocks
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All the following regarding bacteroid form of Rhizobium are true except:
1. It is a differentiated symbiotic form of nitrogen fixing Rhizobium
2. It is non-motile and non-reproductive
3. It has a more freely permeable membrane than free living Rhizobium
4. It is larger in size than the free living Rhizobium and spherical in shape
Rhizobium:
| 1. | lives as aerobe under free-living conditions with an operational nitrogenase that does not fix nitrogen |
| 2. | lives as anaerobe under free-living conditions with a non operational nitrogenase |
| 3. | lives as aerobe during nitrogen-fixing conditions with an operational nitrogenase |
| 4. | lives as anaerobe during nitrogen-fixing conditions with an operational nitrogenase |
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Identify the incorrectly matched pair:
|
Mineral |
Function |
|
|
1. |
Nitrogen |
component of nucleic acids, proteins, hormones, coenzymes |
|
2. |
Magnesium |
component of chlorophyll; activates many enzymes |
|
3. |
Phosphorus |
component of nucleic acids, phospholipids, ATP, several coenzymes |
|
4. |
Sulfur |
component of DNA; activates some enzymes |
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Essential micronutrients in plants:
I. are required in relatively small amounts.
II. are required for a plant to grow from a seed and complete its life cycle.
III. generally help in catalytic functions in the plant.
IV. are of small size and molecular weight.
1. Only I, II and III are correct
2. Only I, II and IV are correct
3. Only II, III and IV are correct
4. All are correct
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