Strategies for Enhancement in Food Production

"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

Which one of the following is a viral disease of poultry?

1. Salmonellosis
2. Newcastle disease
3. Pasteurellosis
4. Coryza

In maize, hybrid vigour is exploited by:-

1. Crossing of two inbred parental lines
2. Bombarding the seeds with DNA
3. Harvesting seeds from the most productive plants
4. Inducing mutations

Crop plants grown in monoculture are-

1. Characterised by poor root system
2. Highly prone to pests
3. Low in yield
4. Free from intraspecific competition

In Maize, hybrid vigour is exploited by-

1. Crossing of two inbred parental lines
2. Inducing mutations
3. Harvesting seeds from the most productive plants
4. Bombarding the protoplast with DNA

In order to obtain virus-free plants through tissue culture the best method is-

1. Anther culture
2. Protoplast culture
3. Meristem culture
4. Embryo rescue

Triticale, the first man-made cereal crop, has been obtained by crossing wheat with

1. Pearl millet
2. Sugarcane
3. Rye
4. Barley

The world's highly prized wool yielding 'Pashmina' breed is -

1. Sheep
2. Goat-sheep cross
3. Kashmir sheep-Afghan sheep cross
4. Goat

Three crops that contribute maximum to global food grain production are -

1. Wheat, maize and sorghum
2. Wheat, rice and barley
3. Wheat, rice and maize
4. Rice, maize and sorghum

Which of the following is generally used for induced mutagenesis in crop plants ?

1. UV (260 nm)
2. Alpha particles
3. Gamma rays (from cobalt-60)
4. X-rays

The name of Norman Borlaug is associated with-

1. Blue Revolution
2. Yellow Revolution
3. Green Revolution
4. White Revolution

The technique of obtaining large number of plantlets by tissue culture method is called –

1. Macropropagation
2. Organ culture
3. Plantlet culture
4. Micropropagation

India's wheat yield revolution in the 1960s was possible primarily due to :-

1. Hybrid seeds
2. Quantitative trait mutations
3. Increased chlorophyll content
4. Mutations resulting in plant height reduction

Cellular totipotency is demonstrated by :

1. All eukaryotic cells
2. Only gymnosperm cells
3. Only bacterial cells
4. All plant cells

What is the reason of formation of embryoid from pollen grain in tissue culture medium ?

1. Double fertilization
2. Test tube culture
3. Cellular totipotency
4. Organogenesis

Which of the following crops have been brought to India from New world ?

1. Mango, tea
2. Coffee
3. Tea, rubber, mango
4. Cashewnut, potato, rubber

Which statement is correct about centre of origin of plant ?

1. Climatic condition more favourable
2. More diversity in improved variety
3. None
4. Frequency of dominant gene is more

Before the European invasion, which vegetables were absent in India?

1. Simla mirch and Brinjal
2. Bitter gourd
3. Maize and chichinda
4. Potato and Tomato

Triticale is obtained by crossing wheat with

1. Barley
2. Rye
3. Oat
4. Maize

Which statement is correct?

1. Workers are the smallest of the three castes
2. Wax is waste material of honey bee
3. Drone of honey bee is diploid
4. A. indica is largest wild honey bee