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Q. No.All the following diseases in plants are caused by a fungal pathogen except:
1. Rust of wheat
2. Smut of bajra
3. Black rot of crucifers
4. Red rot of sugarcane
Subtopic: Breeding for Disease Resistance (OLD NCERT) |
70%
From NCERT
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In mung bean, mutations were used to induce resistance to:
I: yellow mosaic virus
II: powdery mildew
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
I: yellow mosaic virus
II: powdery mildew
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Breeding for Disease Resistance (OLD NCERT) |
75%
From NCERT
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Marine fishes that are eaten include all the following except:
1. Common carp
2. Sardines
3. Mackerel
4. Pomfrets
1. Common carp
2. Sardines
3. Mackerel
4. Pomfrets
Subtopic: Animal Husbandry (OLD NCERT) |
82%
From NCERT
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Inbreeding is important in animal husbandry because it:
1. increases vigour
2. improves the breed
3. increases heterozygosity
4. increases homozygosity
1. increases vigour
2. improves the breed
3. increases heterozygosity
4. increases homozygosity
Subtopic: Animal Husbandry (OLD NCERT) |
84%
From NCERT
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What are the desirable traits in sugarcane for a farmer?
| 1. | Thin stem, long internodes, high sugar content and disease resistant |
| 2. | Thick stem, long internodes, high sugar content and disease resistant |
| 3. | Thick stem, short internodes, high sugar content, disease resistant |
| 4. | Thick stem, low sugar content and disease susceptible |
Subtopic: Insect & Pest Resistance (OLD NCERT) |
87%
From NCERT
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Which blue green alga can be an alternate source of proteins for animal and human nutrition?
1. Chlorella
2. Cladophora
3. Methylophilus
4. Spirulina
Subtopic: Single Cell Protein (OLD NCERT) |
59%
From NCERT
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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
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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