Q. No.Protoplast fusion can be achieved with the use of:
1.
Colchicine
2.
Polyethylene Glycol
3.
Polyacryl amide
4.
Ethidium bromide
By which method was a new breed 'Hisardale' of sheep found by using Bikaneri ewes and Marina rams?
1. Mutational breeding
2. Crossbreeding
3. Inbreeding
4. Outcrossing
The best explants for obtaining virus-free plants in micropropagation are:
| 1. | Meristems |
| 2. | Embryos |
| 3. | Anther |
| 4. | Permanent tissue |
Methylophilus methylotrophus is a source of:
| 1. | Bioinsecticide | 2. | Single cell protein |
| 3. | Thrombolytic | 4. | Clotting factors |
Which of the following is not an example of biofortification?
1. Iodized salt
2. Atlas 66
3. Golden rice
4. Maize hybrids with increased lysine and tryptophan
Identify the incorrectly matched row:
|
Crop |
Variety |
Resistant to |
|
|
1. |
Cauliflower |
Pusa Snowball K1 |
Black rot and Curl blight black rot |
|
2. |
Chilli |
Pusa Sadabahar |
Mosaic virus and Leaf curl |
|
3. |
Flat bean |
Pusa Gaurav |
Jassids |
|
4. |
Okra |
Pusa sawani |
Shoot and fruit borer |
Resistance to yellow mosaic virus and powdery mildew in mung bean:
| 1. | was transferred from a wild variety |
| 2. | was the result of inter-specific hybridization |
| 3. | was induced by mutation |
| 4. | was the result of somaclonal variation |
Identify the incorrectly matched pair:
| Column I | Column II | |
| 1. | Sonalika and Kalyan Sona | Improved varieties of wheat |
| 2. | Jaya and Ratna | Improved varieties of maize |
| 3 | Saccharum Barberi | Poor sugar content and yield |
| 4. | Saccharum officinarum | High sugar content and thick stems |
In plant breeding step which step actually improves the crop?
1. Evaluation and selection of parents
2. Cross hybridization among the selected parents
3. Selection of superior recombinants
4. Testing of new cultivars
The root of any successful plant breeding program is:
1. Effective germplasm collection
2. Availability of facilities for rDNA technology
3. Availability of pure lines
4. Presence of different agro-climatic zones
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