Which of the following is generally used for induced mutagenesis in crop plants?
1. Gamma rays (from cobalt 60)
2. Alpha particles
3. X rays
4. UV (260 nm)
Three crops that contribute maximum to global food grain production are:
1. Wheat, rice, and maize
2. Rice, maize, and sorghum
3. Wheat maize, and sorghum
4. Wheat, rice, and barley
The world's highly prized wool-yielding 'Pashmina' breed is:
1. Kashmir sheep-Afghan sheep cross
2. Goat
3. Sheep
4. Goat-sheep cross
Why is vivipary an undesirable character for annual crop plants?
1. | It reduces the vigour of the plant |
2. | The seeds exhibit long dormancy |
3. | It adversely affects the fertility of the plant |
4. | The seeds cannot be stored under normal conditions for the next season |
India's wheat yield revolution in the 1960s was possible primarily due to:
1. Increased chlorophyll content
2. Mutations resulting in plant height reduction
3. Quantitative trait mutations
4. Hybrid seeds
Which fungal disease spreads by seed and flowers:
1. Loose smut of Wheat
2. Corn stunt
3. Covered smut of Barley
4. Soft rot of Potato
Which of the following secretes toxins during storage conditions of crop plants:
1. Aspergillus
2. Penicillium
3. Fusarium
4. Colletotrichum
Which of the following crops have been brought to India from the New World:
1. Cashewnut, potato, rubber
2. Mango, tea
3. Tea, rubber, mango
4. Coffee
The name Norman Borlaug is associated with:
1. Green Revolution
2. White Revolution
3. Yellow Revolution
4. Blue Revolution
Mutations in plant cells can be induced by:
1. Gamma rays
2. Zeatin
3. Kinetin
4. Infrared rays