Among 'The Evil Quartet', which one is considered the most important cause driving extinction of species?
1. Co-extinctions
2. Habitat loss and fragmentation
3. Over exploitation for economic gain
4. Alien species invasions
1. Co-extinctions
2. Habitat loss and fragmentation
3. Over exploitation for economic gain
4. Alien species invasions
Subtopic: Loss of Biodiversity |
84%
Level 1: 80%+
NEET - 2023
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In tissue culture experiments, leaf mesophyll cells are put in a culture medium to form callus. This phenomenon may be called as
| 1. | Senescence | 2. | Differentiation |
| 3. | Dedifferentiation | 4. | Development |
Subtopic: Differentiation, Dedifferentiation and Redifferentiation |
58%
Level 3: 35%-60%
NEET - 2023
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In gene gun method used to introduce alien DNA into host cells, microparticles of ___________ metal are used.
| 1. | Silver | 2. | Copper |
| 3. | Zinc | 4. | Tungsten or gold |
Subtopic: Transforming Plant & Animal Cell |
94%
Level 1: 80%+
NEET - 2023
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Large, colorful, fragrant flowers with nectar are seen in:
| 1. | wind pollinated plants | 2. | insect pollinated plants |
| 3. | bird pollinated plants | 4. | bat pollinated plants |
Subtopic: Pollination & Outbreeding Devices |
89%
Level 1: 80%+
NEET - 2023
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Expressed Sequence Tags (ESTs) refers to:
1. Certain important expressed genes.
2. All genes that are expressed as RNA.
3. All genes that are expressed as proteins.
4. All genes whether expressed or unexpressed
1. Certain important expressed genes.
2. All genes that are expressed as RNA.
3. All genes that are expressed as proteins.
4. All genes whether expressed or unexpressed
Subtopic: Human Genome Project |
66%
Level 2: 60%+
NEET - 2023
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Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements, choose the correct answer from the options given below :
| Assertion (A): | ATP is used at two steps in glycolysis. |
| Reason (R): | First ATP is used in converting glucose into glucose-6-phosphate and second ATP is used in conversion of fructose-6-phosphate into fructose-1-6-diphosphate. |
| 1. | (A) is False but (R) is True. |
| 2. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 3. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 4. | (A) is True but (R) is False. |
Subtopic: Glycolysis |
82%
Level 1: 80%+
NEET - 2023
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Spraying of which of the following phytohormone on juvenile conifers helps in hastening the maturity period, that leads to early seed production?
| 1. | Abscisic Acid | 2. | Indole-3-butyric Acid |
| 3. | Gibberellic Acid | 4. | Zeatin |
Subtopic: Gibberellin |
79%
Level 2: 60%+
NEET - 2023
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Identify the pair of heterosporous pteridophytes among the following :
1. Equisetum and Salvinia
2. Lycopodium and Selaginella
3. Selaginella and Salvinia
4. Psilotum and Salvinia
1. Equisetum and Salvinia
2. Lycopodium and Selaginella
3. Selaginella and Salvinia
4. Psilotum and Salvinia
Subtopic: Pteridophytes |
88%
Level 1: 80%+
NEET - 2023
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In a dicot stem, the term ‘starch sheath’ is often used to indicate:
1. The hypodermis
2. The endodermis
3. The pericycle
4. The medullary rays
1. The hypodermis
2. The endodermis
3. The pericycle
4. The medullary rays
Subtopic: Dicot Stem |
75%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
What is the role of RNA polymerase III in the process of transcription in Eukaryotes?
1. Transcription of only snRNAs
2. Transcription of rRNAs (28S, 18S and 5.8S)
3. Transcription of tRNA, 5 srRNA and snRNA
4. Transcription of precursor of mRNA
1. Transcription of only snRNAs
2. Transcription of rRNAs (28S, 18S and 5.8S)
3. Transcription of tRNA, 5 srRNA and snRNA
4. Transcription of precursor of mRNA
Subtopic: Transcription |
82%
Level 1: 80%+
NEET - 2023
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