A system of rotating crops with legume or grass pasture to improve soil structure and

fertility is called

1. contour farming

2. strip farming

3. shifting agriculture

4. ley farming

Subtopic:  Plant Breeding for Quality (OLD NCERT) |
NEET - 2016
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Outbreeding is an important stategy of animal husbandry because it

1. help in accumulation of superior genes

2. is useful in producing purelines of animals

3. is useful in overcoming inbreeding depression 

4. exposes harmful recessive genes that are eliminated by selection

Subtopic:  Animal Husbandry (OLD NCERT) |
 82%
From NCERT
NEET - 2015
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A technique of micropropagation is

1. Somatic hybridisation

2. Somatic embryogenesis

3. Protoplast fusion

4. Embryo rescue

Subtopic:  Plant Tissue Culture |
NEET - 2015
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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 |
 60%
NEET - 2015
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In vitro clonal propogation in plants characterised by

1. PCR and RAPD

2. Northen blotting

3. Electrophoresis and HPLC

4. Microscopy

Subtopic:  Plant Tissue Culture |
NEET - 2014
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An alga which can be employed as food for human being is

1. Ulothrix

2. Chlorella

3. Spirogyra

4. Polysiphonia

Subtopic:  Algae |
 67%
NEET - 2014
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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 |
 88%
From NCERT
NEET - 2014
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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. selection of superior recombinations

2. cross-hybridisation among the selected parents

3. evaluation and selection of parents

4. germplasm collection

Subtopic:  Plant Breeding & Its Steps (OLD NCERT) |
 89%
From NCERT
NEET - 2013
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Which part would be most suitable for raising virus-free plants for micropropagation?

1. Bark 2. Vascular tissue
3. Meristem 4. Node
Subtopic:  Plant Tissue Culture |
 96%
From NCERT
NEET - 2012
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Consumption of which one of the following foods can prevent the kind of blindness

associated with vitamin-A deficiency ?

1. Flaver savr tomato

2. Canolla

3. Golden rice

4. Bt-brinjal

Subtopic:  Other GM Crops |
 90%
From NCERT
NEET - 2012
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