5.10 Understand that plants with desired characteristics can be developed by selective breeding

·         Some plants have 6 grains per stem, others have 8 grains per stem and other still has 10 grains per stem.

·         Farmer decision is to harvest this grain (6 and 8 grains per stem) but the 10 grains are for planting.

·         Next generation of rice it would increase to 8, 10, 12 grains per stem and gravest (8 and 10 grains) but the 12 grains are for selective planting and breeding.

·         The rice gradually increases so, the yield increase.

·         This is example of selective breeding.