By which method was a new breed 'Hisardale' of sheep found by using Bikaneri ewes and Marina rams?

1. Mutational breeding

2. Cross breeding

3. Inbreeding

4. Outcrossing

Inbreeding depression is -

In mung bean, resistance to yellow mosaic virus, and powdery mildew was brought about by:

1. Mutation breeding

2. Biofortification

3. Tissue culture

4. Hybridization and selection

Select the incorrect statement regarding inbreeding:

1. Inbreeding helps in elimination of deleterious alleles from the population

2. Inbreeding is necessary to evolve a pure-line in any animal

3. Continued inbreeding reduces fertility and leads to inbreeding depression.

4. Inbreeding depression cannot be overcome by out-crossing.

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