What is the definition of first generation plants?

This is what I found off google idk if this is helpful or not but here ya go. F1 Generation Definition. The F1 generation refers to the first filial generation. Filial generations are the nomenclature given to subsequent sets of offspring from controlled or observed reproduction. ... The first set of offspring from these parents is then known as the F1 generation. And this   The offspring resulting from a parental cross are referred to as the first filial generation (or F1 generation). The F1 generation is the generation resulting immediately from a cross of the first set of parents (parental generation).

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.