Arrange the following steps of a plant breeding program in a correct chronological manner:

I. Selection and testing of superior recombinants

II. Collection of variability

III. Cross-hybridization among the selected parents

IV. Evaluation and selection of parents

V. Testing, release and commercialization of new cultivars

1. II, IV, I, III, V

2. IV, I, II, III, V

3. II. IV, III, I, V

4. IV, III, II, I, V

Subtopic:  Plant Breeding & Its Steps (OLD NCERT) |
 74%
From NCERT
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The best breeding method for animals that are below average in productivity in milk production would be:

1. Inbreeding

2. Out-crossing

3. Cross-breeding

4. Interspecific hybridisation

Subtopic:  Animal Husbandry (OLD NCERT) |
 65%
From NCERT
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Identify the option where all columns are not correctly matched:

      Crop                 Variety                       Resistant to

1.  Wheat              Himgiri                        Leaf rust

2. Brassica             Pusa Swarnim               White rust

3. Cowpea             Pusa komal                   Black rot

4. Chilli                  Pusa sadabahar             Leaf curl

Subtopic:  Breeding for Disease Resistance (OLD NCERT) |
 60%
From NCERT
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In mung bean the resistance to yellow mosaic virus and powdery mildew were introduced by:

1. Mutations

2. Hybridization

3. Tissue culture

4. Genetic engineering

Subtopic:  Breeding for Disease Resistance (OLD NCERT) |
 84%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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Pusa Shubhra, an improved variety of cauliflower, is resistant to:

1. White rust

2. Bacterial blight

3. Black rot

4. Leaf curl

Subtopic:  Breeding for Disease Resistance (OLD NCERT) |
 69%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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To obtain a virus free plant, what can be used as an explant in micropropogation ?

1. Apical meristem

2. Axillary meristem

3. Either apical or axillary meristem

4. Embryo

Subtopic:  Plant Tissue Culture |
 77%
From NCERT
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In plants, somatic embryo regeneration is induced usually by a relatively high concentration of:

(1) Benzyl amino purine

(2) IAA

(3) 2,4 - D

(4) NAA

Subtopic:  Plant Tissue Culture |
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Inbreeding depression in animals can be overcome by:

1. A single outcross

2. Out cross for many generations

3. Cross-breeding

4. Inter-specific hybridization

Subtopic:  Animal Husbandry (OLD NCERT) |
 73%
From NCERT
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Identify the incorrectly matched pair:

 

Crop Variety

Resistant to

1.

Himgiri

Leaf and stripe rust

2.

Karan rai

White rust

3.

Pusa sadabahar

Bacterial blight

4.

Pusa shubhra

Black rot

Subtopic:  Insect & Pest Resistance (OLD NCERT) |
 76%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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Meristem culture is especially important to obtain: 

1. Drought resistant plants

2. Virus free plants

3. Biofortified plants

4. Androgenic haploids

Subtopic:  Plant Tissue Culture |
 93%
From NCERT
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