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) |
 92%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


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%
Please attempt this question first.
Hints

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%
Please attempt this question first.
Hints

advertisementadvertisement

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 |
 90%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

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%
Please attempt this question first.
Hints

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) |
 51%
Please attempt this question first.
Hints

advertisementadvertisement

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 |
 91%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

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%
Please attempt this question first.
Hints

Green revolution in India occurred during:
1. 1960’s
2. 1970’s
3. 1980’s
4. 1950’s

Subtopic:  Impact: Green Revolution (OLD NCERT) |
 77%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


advertisementadvertisement

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) |
 74%
Please attempt this question first.
Hints