Inbreeding depression is -

1.	Reduced motility and immunity due to close inbreeding
2.	Decreased productivity due to mating of superior male and inferior female
3.	Decrease in body mass of progeny due to continued close inbreeding
4.	Reduced fertility and productivity due to continued close inbreeding

Consider the following four statements (I-IV) and select the option which includes all the correct ones only :

1.  Statements (I), (III) and (IV) 

2. Statements (II), (III) and (IV) 

3. Statements (I), (II) 

4. Statements (III), (IV) 

Green revolution in India occurred during -
1.  1970's
2.  1980's
3.  1950's
4.  1960's

The name of Norman Borlaug is associated with-

(1) Green Revolution

(2) White Revolution

(3) Yellow Revolution

(4) Blue Revolution

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 

Why is vivipary an undersirable 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

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

(1) Organ culture

(2) Micropropagation

(3) Macropropagation

(4) Plantlet culture

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