Q. No.Identify the incorrect statement amongst the following:
1. Phosphorus is obtained by the plants from the soil in the form of phosphates
2. Nitrogen is obtained from the soil in the form of nitrates , nitrites and ammonium salts
3. Sulphur is mainly obtained by plants as sulphur dioxide by foliar absorption
4. Boron is absorbed in the form of borate ions
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is an activator of the enzyme:
| 1. RuBisCO | 2. PEP carboxylase |
| 3. Nitrogenase | 4. Alcohol dehydrogenase |
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A plant requires magnesium mainly for:
| 1. DNA replication | 2. Synthesizing enzymes |
| 3. Synthesizing hormones | 4. Synthesizing chlorophyll |
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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 |
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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
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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 |
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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
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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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Match the element with its associated functions/roles and choose the correct option among given below:
|
A. Boron |
i. Splitting of H2O to liberate O2 during photosynthesis |
|
B. Manganese |
ii. Needed for synthesis of auxins |
|
C. Molybdenum |
iii. Component of nitrogenase |
|
D. Zinc |
iv. Pollen germination |
|
E. Iron |
v. Component of ferredoxin |
Options:
| A | B | C | D | E | |
| 1. | i | ii | iii | iv | v |
| 2. | iv | i | iii | ii | v |
| 3. | iii | ii | iv | v | i |
| 4. | ii | iii | v | i | iv |
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