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

1. Kashmir sheep-Afghan sheep cross

2. Goat

3. Sheep

4. Goat-sheep cross

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 

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)

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