A collection of all the alleles of all the genes of a crop plant is called:

1. germplasm collection 2. protoplasm collection
3. herbarium 4. somaclonal collection

Subtopic:  Impact: Green Revolution (OLD NCERT) |
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Wild varieties of plants must be conserved to
1. Maintain ecosystem
2. Feeding wild animals
3. Future evolution
4. Incorporate useful traits in future crop varieties

Subtopic:  Plant Breeding & Its Steps (OLD NCERT) | Breeding for Disease Resistance (OLD NCERT) |
 77%
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Differentiation of shoot in tissue culture is controlled by
1. High auxin :cytokinin ratio
2. High cytokinin : auxin ratio
3. High gibberellin : auxin ratio
4. High gibberellin :cytokinin ratio

Subtopic:  Plant Tissue Culture |
 59%
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The technique of obtaining large number of plantlets through tissue culture is
1. Micropropagation
2. Macropropagation
3. Organ culture
4. Plantlet culture

Subtopic:  Plant Tissue Culture |
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Which one is a neem product used as insect repellent?
1. Rotenone
2. Azadirachtin
3. Parathion
4. Endrin

Subtopic:  Plant Breeding & Its Steps (OLD NCERT) | Breeding for Disease Resistance (OLD NCERT) |
 65%
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In Maize, hybrid vigour is produced by
1. Crossing two inbreed lines
2. Inducing mutations
3. Bombarding the protoplast with DNA
4. Harvesting seeds from most productive plants

Subtopic:  Plant Breeding & Its Steps (OLD NCERT) |
 52%
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Breeding of crops with high level of minerals, vitamins and proteins is called
1. Biofortification
2. Biomagnification
3. Micropropagation
4. Somatic hybridization

Subtopic:  Single Cell Protein (OLD NCERT) | Plant Tissue Culture |
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Which one of the following is a case of wrong matching
1. Somatic hybridization - Fusion of two diverse cells
2. Vector DNA -Site for t-RNA synthesis
3. Micropropagation- In vitro production of plants in large numbers
4. Callus - Unorganised mass of cell produced in tissue culture

Subtopic:  Plant Tissue Culture |
 73%
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Green revolution in India occurred during:
1. 1960’s
2. 1970’s
3. 1980’s
4. 1950’s

Subtopic:  Impact: Green Revolution (OLD NCERT) |
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Consider the following four statements (a-d) and select the option which includes all the correct ones only.    
(a) Single cell Spirulina can produce large quantities of food rich in protein, minerals, vitamins etc.
(b) Body weight-wise the microorganism Methylophilusmethylotrophus may be able to produce several times
more proteins than the cows per day
(c) Common button mushrooms are a very rich source of vitamin C
(d) A rice variety has been developed which is very rich in calcium. 
Options :

1. Statements (c), (d)
2. Statements (a), (c) and (d)
3. Statements (b), (c) and (d)
4. Statements (a), (b)

Subtopic:  Single Cell Protein (OLD NCERT) |
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