In a pea flower, five petals are arranged in a specialized manner with one posterior, two lateral and two anterior. These are named as___________, ____________ and ________ respectively.
1. Keel, Wings and standard
2. Vexillum, Keel and standard
3. Keel, Standard and Carina
4. Standard, Wings and Keel
Subtopic: Flower & Parts of Flower |
72%
From NCERT
NEET - 2023
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In which of the following sets of families, the pollen grain are viable for months?
1. Solanaceae, Poaceae and Liliaceae
2. Brassicaceae, Liliaceae and Poaceae
3. Rosaceae, Liliaceae and Poaceae
4. Leguminosae, Solanaceae and Rosaceae
1. Solanaceae, Poaceae and Liliaceae
2. Brassicaceae, Liliaceae and Poaceae
3. Rosaceae, Liliaceae and Poaceae
4. Leguminosae, Solanaceae and Rosaceae
Subtopic: Stamen: Microsporangium | Stamen: Male Gametophyte |
83%
From NCERT
NEET - 2023
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Transfer of pollen grains from anther to stigma of another flower of same plant is known as:
| 1. | Geitonogamy | 2. | Xenogamy |
| 3. | Autogamy | 4. | Cleistogamy |
Subtopic: Pollination & Outbreeding Devices |
86%
From NCERT
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
1. Phototropism
2. Root initiation
3. Gravitropism
4. Apical Dominance
Subtopic: Growth Hormones & Auxin | Photoperiodism (OLD NCERT) |
61%
From NCERT
NEET - 2023
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The transverse section of plant part showed polyarch, radial and exarch xylem, with endodermis and pericycle. The plant part is identified as:
| 1. | Monocot root | 2. | Dicot root |
| 3. | Dicot stem | 4. | Monocot stem |
Subtopic: Anatomy of Root |
72%
From NCERT
NEET - 2023
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What will happen if fresh water lake gets contaminated by the addition of polluted water with high BOD?
| 1. | Amount of dissolved oxygen in the lake will decrease. |
| 2. | The lake will remain unaffected |
| 3. | Number of submerged aquatic plants in the lake will increase |
| 4. | Number of aquatic animals in the lake will increase. |
Subtopic: Water Pollution |
83%
From NCERT
NEET - 2023
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The last chromosome sequenced in Human Genome project was:
| 1. | Chromosome 6 | 2. | Chromosome 1 |
| 3. | Chromosome 22 | 4. | Chromosome 14 |
Subtopic: Human Genome Project |
73%
From NCERT
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 |
Subtopic: Mineral Cycling & Ecosystem Services (OLD NCERT) |
66%
From NCERT
NEET - 2023
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Plants offer rewards to animals in the form of pollen and nectar and the animals facilitate the pollination process. This is an example of:
1. Amensalism
2. Competition
3. Commensalism
4. Mutualism
1. Amensalism
2. Competition
3. Commensalism
4. Mutualism
Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
89%
From NCERT
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 |
Subtopic: Importance of Biodiversity |
62%
NEET - 2023
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