_________ is grown to prevent soil erosion and enhance soil fertility. 

_________ is grown to prevent soil erosion and enhance soil fertility. 

What are the “Three Sisters”? 

 What is the significance of a roots shape?

Mass selection is the oldest breeding method of plants and is based on visual selection. 

The use of hybrids is in hopes that heterosis (hybrid vigor) will occur with the offspring. 

The use of hybrids is in hopes that heterosis (hybrid vigor) will occur with the offspring. 

Harvest Index is the ration of economic yield to total plant biological yield. 

Harvest Index is the ration of economic yield to total plant biological yield. 

The main purpose of identifying leaf shape, size, venation, and different auricles, collars, sheaths, and ligules is for classification purposes.