Q. No.Which micronutrient is required for splitting of water molecule during photosynthesis?
| 1. | Copper | 2. | Manganese |
| 3. | Molybdenum | 4. | Magnesium |
Subtopic: Β Mineral Function |
Β 61%
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Unequivocal proof that DNA is the genetic material was first proposed by:
1. Wilkins and Franklin
2. Frederick Griffith
3. Alfred Hershey and Martha Chase
4. Avery, Macleod and McCarthy
1. Wilkins and Franklin
2. Frederick Griffith
3. Alfred Hershey and Martha Chase
4. Avery, Macleod and McCarthy
Subtopic: Β Search for Genetic Material |
Β 79%
From NCERT
NEET - 2023
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Give below are two statements :
In the light of the above statements, choose the correct answer from the options given below:
1. Statement I is incorrect but Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
| Statement I: | Endarch and exarch are the terms often used for describing the position of secondary xylem in the plant body. |
| Statement II: | Exarch condition is the most common feature of the root system. |
In the light of the above statements, choose the correct answer from the options given below:
1. Statement I is incorrect but Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
Subtopic: Β Dicot Stem |
Β 58%
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Cellulose does not form blue colour with iodine because
| 1. | It breaks down when iodine reacts with it. |
| 2. | It is a disaccharide. |
| 3. | It is a helical molecule. |
| 4. | It does not contain complex helices and hence cannot hold iodine molecules. |
Subtopic: Β Carbohydrates: Cellulose, Chitin, Inulin & Agar |
Β 84%
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NEET - 2023
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Family Fabaceae differs from Solanaceae and Liliaceae. With respect to the stamens, pick out the characteristics specific to family Fabaceae but not found in Solanaceae or Liliaceae.
| 1. | Epiphyllous and Dithecous anthers |
| 2. | Diadelphous and Dithecous anthers |
| 3. | Polyadelphous and epipetalous stamens |
| 4. | Monoadelphous and Monothecous anthers |
Subtopic: Β Families of Flowering Plant |
Β 68%
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The reaction centre in PS II has an absorption maxima at:
| 1. | 780 nm | 2. | 680 nm |
| 3. | 700 nm | 4. | 660 nm |
Subtopic: Β Light Reactions |
Β 88%
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Upon exposure to UV radiation, DNA stained with ethidium bromide will show:
1. Bright orange colour
2. Bright red colour
3. Bright Blue colour
4. Bright yellow colour
1. Bright orange colour
2. Bright red colour
3. Bright Blue colour
4. Bright yellow colour
Subtopic: Β Separation and Isolation of DNA fragments |
Β 91%
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NEET - 2023
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The phenomenon of pleiotropism refers to:
| 1. | more than two genes affecting a single character. |
| 2. | presence of several alleles of a single gene controlling a single crossover. |
| 3. | presence of two alleles, each of the two genes controlling a single trait. |
| 4. | a single gene affecting multiple phenotypic expressions. |
Subtopic: Β Polygenic Inheritance & Pleiotropy |
Β 78%
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NEET - 2023
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The historic Convention on Biological Diversity, 'The Earth Summit' was held in Rio de Janeiro in the year :
| 1. | 2002 | 2. | 1985 |
| 3. | 1992 | 4. | 1986 |
Subtopic: Β Ex Situ Conservation of Biodiversity |
Β 80%
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During the purification process for recombinant DNA technology, addition of chilled ethanol precipitates out:
| 1. | Polysaccharides | 2. | RNA |
| 3. | DNA | 4. | Histones |
Subtopic: Β General Design of an rDNA experiment |
Β 87%
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