Outbreeding is an important strategy in animal husbandry because it

1. help in accumulation of Superior genes.

2. is useful in producing pure lines of animals.

3. is useful in overcoming inbreeding depression.

4. exposes harmful recessive genes that are eliminated by selection.

Subtopic:  Animal Husbandry |
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The crops engineered for glyphosate are resistant/tolerant to
1. fungi
2. bacteria
3. insects
4. herbicides

 

Subtopic:  Insect & Pest Resistance |
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Which of the following enhances or induces fusion of protoplasts?
1. Sodium chloride and potassium chloride
2. Polyethylene glycol and sodium nitrate
3. IAA and kinetin
4. IAA and gibberellins

 

Subtopic:  Plant Tissue Culture |
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In vitro clonal propagation in plants in characterized by :

1. PCR and RAPD

2. Northern blotting

3. Electrophoresis and HPLC

4. Microscopy

Subtopic:  Plant Tissue Culture |
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To obtain virus - free healthy plants from a diseased one by tissue culture technique, which part/parts of the diseased plant will be taken ?

1. Apical meristem only

2. Palisade parenchyma

3. Both apical and axillary meristems

4. Epidermis only

Subtopic:  Plant Tissue Culture |
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In plant breeding programmes, the entire collection (of plants/seeds) having all the diverse alleles for all genes in a given crop is called 
1. cross-hybridisation among the selected parents.
2. evaluation and selection of parents.
3. germplasm collection
4. selection of superior recombinants.
Subtopic:  Plant Breeding & Its Steps |
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Which part would be most suitable for raising virus-free plants for micro propagation?

1. Bark

2. Vascular tissue

3. Meristem

4. Node

Subtopic:  Plant Tissue Culture |
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Consider the following four statements (I-IV) and select the option which includes all the correct ones only :
(I)  Single cell Spirulina can produce large quantities of food rich in protein, minerals, vitamins etc.
(II)  Body weight-wise, the microorganisms Methylophilus methylotrophus may be able to produce several times more proteins than produced by a cow per day through its milk
(III)  Common button mushrooms are a very rich source of vitamin C
(IV)  A rice variety has been developed which is very rich in calcium

1.  Statements (I) , (III) and (IV) 

2. Statements (II) , (III) and (IV) 

3. Statements (I) , (II) 

4. Statements (III) , (IV) 

Subtopic:  Single Cell Protein |
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Green revolution in India occurred during -
1.  1970's
2.  1980's
3.  1950's
4.  1960's

Subtopic:  Plant Breeding & Its Steps | Impact: Green Revolution |
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‘Jaya’ and ‘Ratna’ developed for green revolution in India are the varieties of

1.  rice

2.  wheat

3.  bajra

4.  maize

Subtopic:  Impact: Green Revolution |
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