Answer:

1.Germination. The first step of germination is the absorption of water – a lot of water. Absorption of water activates enzymes in the seed that stimulate growth. These enzymes break down starches in the endosperm into sugars that can be used for energy.

2.A nursery is a place where plants are propagated and grown to a desired age.

3.Rice, sorghum , and most of the cultivated species. Recalcitrant – just opposite to the orthodox. Seeds not able to tolerate moisture loss. Required high moisture for viability maintenance.