Differentiate between primary introduction from secondary introduction.

How are microbial inoculants used to increase the soil fertility?

What are bio-pesticides? Why they are considered better than synthetic pesticides?

Define acclimatization.

Who coined the term "pureline"? Define it.

Mutagens are the substances that induces mutation. Name any two physical and chemical mutagens.

Write in brief about Atomic Garden.

State anyone advantage and one disadvantage of polyploid breeding.

What is Biofortification?

In which plant, and by whom the first natural hybridization was performed?