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

Concept Questions :-

Plant Breeding & Its Steps
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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.

Concept Questions :-

Animal Husbandry
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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

Concept Questions :-

Animal Husbandry
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Identify the option where all columns are not correctly matched:

Concept Questions :-

Breeding for Disease Resistance
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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

Concept Questions :-

Breeding for Disease Resistance
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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

Concept Questions :-

Breeding for Disease Resistance
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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

Concept Questions :-

Plant Tissue Culture
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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

Concept Questions :-

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

Concept Questions :-

Animal Husbandry
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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

Concept Questions :-

Insect & Pest Resistance
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Difficulty Level: