List five groups of plants according to their soil needs for crop rotation.

What is crop rotation?

Rearrange the following group of plants according to their evolution from Palaeozoic to Cenozoic periods: Rhynia, Arborescent Lycopods, Conifers, dicotylendon.

Give one example of crop rotation?

Explain the importance of crop rotation?

List five carnivores.

Discuss the requirements for a good crop rotation.

List five axioms (postulates) used in this book.

What is inter-varietal crop rotation?

List five famous botanical gardens of world.