Separation of DNA, fragments is done by a technique known as :
1. Polymerase Chain Reaction
2. Recombinant technology
3. Southern blotting
4. Gel electrophoresis
1. Polymerase Chain Reaction
2. Recombinant technology
3. Southern blotting
4. Gel electrophoresis
Subtopic: Separation and Isolation of DNA fragments |
90%
Level 1: 80%+
NEET - 2022
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The phenomenon by which the undividing parenchyma cells start to divide mitotically during plant tissue culture is called as :
1. Differentiation
2. Dedifferentiation
3. Redifferentiation
4. Secondary growth
1. Differentiation
2. Dedifferentiation
3. Redifferentiation
4. Secondary growth
Subtopic: Differentiation, Dedifferentiation and Redifferentiation |
75%
Level 2: 60%+
NEET - 2022
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In meiosis, crossing over and exchange of genetic material between homologous chromosomes are catalyzed by the enzyme.
1. Phosphorylase
2. Recombinase
3. Transferase
4. Polymerase
1. Phosphorylase
2. Recombinase
3. Transferase
4. Polymerase
Subtopic: Cell Cycle: Meiosis I |
94%
Level 1: 80%+
NEET - 2022
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The 5-C compound formed during TCA cycle is :
1. \(\alpha-\)ketoglutaric acid
2. Oxalo succinic acid
3. Succinic acid
4. Fumaric acid
1. \(\alpha-\)ketoglutaric acid
2. Oxalo succinic acid
3. Succinic acid
4. Fumaric acid
Subtopic: Kreb's Cycle |
89%
Level 1: 80%+
NEET - 2022
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The World Summit on sustainable development held in 2002 in Johannesburg, South Africa pledged for:
| 1. | A significant reduction in the current rate of biodiversity loss. |
| 2. | Declaration of more biodiversity hotspots. |
| 3. | Increase in agricultural production |
| 4. | Collection and preservation of seeds of different genetic strains of commercially important plants. |
Subtopic: Biodiversity Conservation |
84%
Level 1: 80%+
NEET - 2022
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Identify label X and Y in the given figure of stoma.
| X | Y | |
| 1. | Epidermal cell | Stoma pore |
| 2. | Accessory cell | Nucleus |
| 3. | Guard cell | Stomatal aperture |
| 4. | Subsidiary cell | Stoma pore |
Subtopic: Epidermal Tissue System |
72%
Level 2: 60%+
Please attempt this question first.
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Please attempt this question first.
Which of the following statement is not correct?
| 1. | Rhizome is a condensed form of stem. |
| 2. | The apical bud in rhizome always remains above the ground. |
| 3. | The rhizome is aerial with no distinct nodes and internodes. |
| 4. | The rhizome is thick, prostrate and branched. |
Subtopic: Modifications of Stem |
51%
Level 3: 35%-60%
NEET - 2022
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To ensure that only the desired pollens fall on the stigma in artificial hybridization process:
Choose the correct answer from the options given below:
| a: | the female flower buds of plant producing unisexual flower need not be bagged. |
| b: | there is no need to emasculate unisexual flowers of selected female parent. |
| c: | emasculated flowers are to be bagged immediately after cross pollination. |
| d: | emasculated flowers are to be bagged after removal of anthers. |
| e: | bisexual flowers, showing protogyny are never selected for cross. |
| 1. | (a), (b) and (c) only | 2. | (b), (c) and (d) only |
| 3. | (b), (c) and (e) only | 4. | (a), (d) and (e) only |
Subtopic: Pollen - Pistil Interaction |
67%
Level 2: 60%+
NEET - 2022
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The residual persistent part which forms the perisperm in the seeds of beet is :
1. Calyx
2. Endosperm
3. Nucellus
4. Integument
1. Calyx
2. Endosperm
3. Nucellus
4. Integument
Subtopic: Embryo | Seed |
79%
Level 2: 60%+
NEET - 2022
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The chromosomal theory of inheritance was proposed by:
1. Thomas Morgan
2. Sutton and Boveri
3. Gregor Mendel
4. Robert Brown
1. Thomas Morgan
2. Sutton and Boveri
3. Gregor Mendel
4. Robert Brown
Subtopic: Chromosomal Basis of Inheritance: Introduction |
84%
Level 1: 80%+
NEET - 2022
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