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. Crosshybridization 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) |
 80%
From NCERT
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Identify the incorrect statement regarding Multiple Ovulation Embryo Transfer Technology (MOET):

(1) FSH like hormone or PMSG [pregnant mare serum gonadotropin] are used to induce super-ovulation [6-8 eggs rather thanone per cycle] and Prostagladins are used to regulate the duration of cycle.

(2) Fresh embryos can be stored at 37°C for 6-8 hours without much harm but it is recommended that the embryos are inserted into the recipient cow or frozen as soon as possible. The embryos can be stored for ever in liquid nitrogen.

(3) The animal is either mated with an elite bull or artificially iseminated and the fertilized eggs at 8-32 cells stages, are recovered non-surgically and transfered to genetic mothers.

(4) The embryos are transferred to a recipient cow whose oestrous cycle is at the correct receptive stage.

Subtopic:  Animal Husbandry (OLD NCERT) |
 50%
From NCERT
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The best breeding method for animals that are below average in produtivity in milk production would be:

(1) Inbreeding

(2) Out-crossing

(3) Cross-breeding

(4) Interspecific hybridisation

Subtopic:  Animal Husbandry (OLD NCERT) |
 75%
From NCERT
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Identify the option where all columns are not correctly matched:

Subtopic:  Breeding for Disease Resistance (OLD NCERT) |
 65%
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) |
 91%
From NCERT
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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) |
 75%
From NCERT
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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 |
 82%
From NCERT
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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) |
 82%
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) |
 82%
From NCERT
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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 |
 95%
From NCERT
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