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Q. No.The first stable product of fixation of atmospheric nitrogen in leguminous plants is:
1. NO2
2. ammonia
3. NO3
4. Glutamate
Subtopic: Nitrogen Fixation |
80%
Level 1: 80%+
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Subtopic: Classification of Nutrients |
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Which of the following statements are correct?
1. (i), (ii), (iii)
2. (i), (ii), (iv)
3. (i) and (iv)
4. None of these
| i. | Solution culture/hydroponics contains all essential minerals except one, the usefulness of which is to be determined. |
| ii. | Na, Si, Co and selenium are beneficial element required by higher plants |
| iii. | Zn is the activator of nitrogenases while Mo is the activator of alcohol dehydrogenase. |
| iv. | Zn is needed for auxin synthesis. |
1. (i), (ii), (iii)
2. (i), (ii), (iv)
3. (i) and (iv)
4. None of these
Subtopic: Criteria for Essentiality of Elements | Hydroponics & Aeroponics | Mineral Function |
73%
Level 2: 60%+
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Some functions of nutrient element are given below:
The concerned nutrient is
1. Cu
2. Fe
3. Ca
4. Mo
| I. | Important constituent of proteins involved in ETS. |
| II. | Activator of catalase. |
| III. | Important constituent of cytochrome. |
| IV. | Essential for chlorophyll synthesis. |
1. Cu
2. Fe
3. Ca
4. Mo
Subtopic: Mineral Function |
71%
Level 2: 60%+
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Subtopic: Classification of Nutrients |
76%
Level 2: 60%+
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Match List - I with List - II
Choose the correct answer from the options given below:
| List - I | List - II | ||
| (A) | Nitrococcus | (I) | Denitrification |
| (B) | Rhizobium | (II) | Conversion of ammonia to nitrite |
| (C) | Thiobacillus | (III) | Conversion of nitrite to nitrate |
| (D) | Nitrobacter | (IV) | Conversion of atmospheric nitrogen to ammonia |
| Options: | (A) | (B) | (C) | (D) |
| 1. | III | I | IV | II |
| 2. | IV | III | II | I |
| 3. | II | IV | I | III |
| 4. | I | II | III | IV |
Subtopic: Nitrogen Fixation |
67%
Level 2: 60%+
NEET - 2023
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NEET 2026 - Target Batch - Vital
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NEET 2026 - Target Batch - Vital
Which of the following mineral ion is not remobilized in plants?
| 1. | Potassium | 2. | Calcium |
| 3. | Nitrogen | 4. | Phosphorus |
Subtopic: Mineral Deficiency & Toxicity |
67%
Level 2: 60%+
NEET - 2023
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NEET 2026 - Target Batch - Vital
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Match List I with List II:
Choose the correct answer from the options given below:
| List I | List II | ||
| A. | Iron | I. | Synthesis of auxin |
| B. | Zinc | II. | Component of nitrate reductase |
| C. | Boron | III. | Activator of catalase |
| D. | Molybdenum | IV | Cell elongation and differentiation |
Choose the correct answer from the options given below:
| Options: | A | B | C | D |
| 1. | II | IV | I | III |
| 2. | III | II | I | IV |
| 3. | II | III | IV | I |
| 4. | III | I | IV | II |
Subtopic: Mineral Function |
54%
Level 3: 35%-60%
NEET - 2023
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NEET 2026 - Target Batch - Vital
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Which micronutrient is required for splitting of water molecule during photosynthesis?
| 1. | Copper | 2. | Manganese |
| 3. | Molybdenum | 4. | Magnesium |
Subtopic: Mineral Function |
59%
Level 3: 35%-60%
NEET - 2023
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NEET 2026 - Target Batch - Vital
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Nitrobacter:
1. Oxidises ammonia to nitrite
2. Reduces ammonia to nitrite
3. Oxidises nitrite to nitrate
4. Reduces nitrite to nitrate
1. Oxidises ammonia to nitrite
2. Reduces ammonia to nitrite
3. Oxidises nitrite to nitrate
4. Reduces nitrite to nitrate
Subtopic: Nitrogen Fixation |
71%
Level 2: 60%+
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