Nitrates and phosphates flowing from agricultural farms into water bodies are a significant cause of:
| 1. | Eutrophication | 2. | Humification |
| 3. | Mineralisation | 4. | Stratification |
Subtopic: Â Water Pollution |
 62%
Level 2: 60%+
NEET - 2023
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In 'rivet popper hypothesis', Paul Ehrlich compared the rivets in an airplane to
| 1. | species within a genus | 2. | genetic diversity |
| 3. | ecosystem | 4. | genera within a family |
Subtopic: Â Importance of Biodiversity |
 67%
Level 2: 60%+
NEET - 2023
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The phenomenon which is influenced by auxin and also played a major role in its discovery is:
| 1. | Phototropism | 2. | Root initiation |
| 3. | Gravitropism | 4. | Apical Dominance |
Subtopic: Â Growth Hormones & Auxin |
 62%
Level 2: 60%+
NEET - 2023
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The amount of nutrients such as carbon, nitrogen, potassium and calcium present in the soil at any given time is referred to as:
| 1. | Standing state | 2. | Standing crop |
| 3. | Humus | 4. | Detritus |
 62%
Level 2: 60%+
NEET - 2023
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The species of plants that plays a vital role in controlling the relative abundance of other species in a community is called _______.
1. alien species
2. endemic species
3. exotic species
4. keystone species
1. alien species
2. endemic species
3. exotic species
4. keystone species
Subtopic: Â Importance of Biodiversity |
 62%
Level 2: 60%+
NEET - 2023
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During symport, two different molecules move across the membrane:
| 1. | in same direction with the help of different carriers located at a common site |
| 2. | in same direction with the help of different carriers located at different sites in the same cell |
| 3. | in same direction with the help of same carrier |
| 4. | in opposite direction with the help of same carrier |
Subtopic: Â Means of Transport: Passive |
 52%
Level 3: 35%-60%
NEET - 2023
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Which of the following mineral ion is not remobilized in plants?
| 1. | Potassium | 2. | Calcium |
| 3. | Nitrogen | 4. | Phosphorus |
Subtopic: Â Mineral Deficiency & Toxicity |
 65%
Level 2: 60%+
NEET - 2023
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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: Â Nitrogen Fixation |
 66%
Level 2: 60%+
NEET - 2023
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Which of the following statements is true?
| 1. | All pteridophytes exhibit haplo-diplontic pattern. |
| 2. | Seed bearing plants follow haplontic pattern. |
| 3. | Most algal genera are diplontic. |
| 4. | Most bryophytes do not have haplo-diplontic life cycle. |
 68%
Level 2: 60%+
NEET - 2023
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Which of the following statement is incorrect about Agrobacterium tumefaciens ?
| 1. | It is used to deliver gene of interest in both prokaryotic as well as eukaryotic host cells. |
| 2. | 'Ti' plasmid from Agrobacterium tumefaciens used for gene transfer is not pathogenic to plant cells. |
| 3. | It transforms normal plant cells into tumor cells. |
| 4.. | It delivers 'T-DNA' into plant cell. |
Subtopic: Â Transforming Plant & Animal Cell |
 60%
Level 2: 60%+
NEET - 2023
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