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Q. No.Which of the following properties is the reason that whole plants can be regenerated from explants?
1. Phenotypic plasticity
2. Cellular totipotency
3. Open growth
4. Open differentiation
Subtopic: Plant Tissue Culture |
92%
From NCERT
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The best explant for regenerating virus free plantlets would be:
1. Embryo
2. Meristem
3. Anther
4. Endosperm
1. Embryo
2. Meristem
3. Anther
4. Endosperm
Subtopic: Plant Tissue Culture |
94%
From NCERT
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In Abelmoschus esculentus, resistance to yellow mosaic virus was brought about by:
1. Mutation breeding
2. Biofortification
3. Tissue culture
4. Hybridization and selection
1. Mutation breeding
2. Biofortification
3. Tissue culture
4. Hybridization and selection
Subtopic: Breeding for Disease Resistance (OLD NCERT) |
From NCERT
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Select the incorrect statement with respect to inbreeding of animals.
1. It is used for evolving pure lines in cattle.
2. It helps in accumulation of superior genes and elimination of less desirable genes.
3. It decreases homozygosity.
4. It exposes harmful recessive genes that are eliminated by selection
1. It is used for evolving pure lines in cattle.
2. It helps in accumulation of superior genes and elimination of less desirable genes.
3. It decreases homozygosity.
4. It exposes harmful recessive genes that are eliminated by selection
Subtopic: Animal Husbandry (OLD NCERT) |
92%
From NCERT
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Which one of the following is NOT an advantage of inbreeding?
| 1. | It decreases the productivity of inbred population, after continuous inbreeding. |
| 2. | It decreases homozygosity. |
| 3. | It exposes harmful recessive genes that are eliminated by selection. |
| 4. | Elimination of less desirable genes and accumulation of superior genes takes place due to it. |
Subtopic: Animal Husbandry (OLD NCERT) |
From NCERT
NEET - 2023
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Select the incorrect statement with respect to Multiple Ovulation Embryo Transfer (MOET) technology.
| 1. | Fertilised eggs at 4 to 6 cells - stages are recovered non-surgically from a super-ovulating cow and transferred to a surrogate mother. |
| 2. | It is used to increase herd size in a short time |
| 3. | Cow is administered with hormones to induce super-ovulation. |
| 4. | Super-ovulating cow is either mated with an elite bull or is artificially inseminated |
Subtopic: Animal Husbandry (OLD NCERT) |
59%
From NCERT
NEET - 2023
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Given below are two statements:
| Assertion (A): | Germplasm collection is a very time consuming and tedious process. |
| Reason (R): | Germplasm collection is entire collection of antibiotic resistant genes. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Plant Breeding & Its Steps (OLD NCERT) |
60%
From NCERT
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Given below are two statements:
| Assertion (A): | In plant breeding experiment superior recombinants among hybrid progeny are self-pollinated to achieve homozygosity. |
| Reason (R): | Characters in homozygous condition do not segregate. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Plant Breeding & Its Steps (OLD NCERT) |
72%
From NCERT
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Given below are two statements:
| Assertion (A): | Parbhani Kranti is high yielding variety of okra which is resistant to yellow mosaic virus. |
| Reason (R): | Genes for high yield and resistance to yellow mosaic virus are transferred from cultivated varieties. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Breeding for Disease Resistance (OLD NCERT) |
51%
From NCERT
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Given below are two statements:
| Assertion (A): | Apical bud and axillary bud are most suitable explants to produce virus free plants. |
| Reason (R): | Meristems have rapid rate of cell division and are free from viruses. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Plant Tissue Culture |
86%
From NCERT
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