Strategies for Enhancement in Food Production · Question 27

Which part would be most suitable for raising virus-free plants for micropropagation?

1. Vascular tissue
2. Node
3. Bark
4. Meristem

When two unrelated individuals or lines are crossed, the performance of F1 hybrid is often superior to both parents. This phenomenon is called :

1. Splicing
2. Transformation
3. Heterosis
4. Metamorphosis

A collection of plants and seeds having diverse alleles of all the genes of a crop is called :

1. Gene library
2. Genome
3. Germplasm
4. Herbarium

"Jaya" and "Ratna" developed for green revolution in India are the varieties of :

1. Bajra
2. Wheat
3. Maize
4. Rice

'Himgiri' developed by hybridisation and selection for disease resistance against rust pathogens is a variety of :

1. Chilli
2. Sugarcane
3. Wheat
4. Maize

Breeding of crops with high levels of minerals, vitamins and proteins is called –

1. Biofortification
2. Biomagnification
3. Micropropagation
4. Somatic hybridisation

Somaclones are obtained by :

1. Tissue culture
2. Plant breeding
3. Genetic engineering
4. Irradiation

Which one of the following is linked to the discovery of Bordeaux mixture as a popular fungicide?

1. Downy mildew of grapes
2. Bacterial leaf blight of rice
3. Loose smut of wheat
4. Black rust of wheat

Consider the following four measures (i-iv) that could be taken to successfully grow chickpea in an area where bacterial blight disease is common: (i) Spray with Bordeaux mixture (ii) Control of the insect vector of the disease pathogen (iii) Use of only disease-free seeds (iv) Use of varieties resistant to the disease Which two of the above measures can control the disease?

1. (i) and (ii)
2. (i) and (iv)
3. (ii) and (iii)
4. (iii) and (iv)

In cloning of cattle a fertilized egg is taken out of the mother's womb and:

1. In the eight cell stage the individual cells are separated under electrical field for further development in culture media
2. The egg is divided into 4 pairs of cells which are implanted into the womb of other cows
3. In the eight cell stage, cells are separated and cultured until small embryos are formed which are implanted into the womb of other cows
4. From this up to eight identical twins can be produced