Population size not members of species but spatially limited. In terms of ecological relationships what matters is how crowded population number per area. If these trees are crowded in one are we would have the same. Animals population size is straight forward unlike plants. Dark green trees one genetic individual grown by spreading species are number but higher density outward from a central point used to be a single seed. Grass makes a turf pop hard to distungish. Aspen one seed produces many identical connected stems. Larkspur standard plant; doesn"t do anything unusual. Plant flowers trade pollen grains many different seeds are produced as a result of combination of pollen and ovule sexual reproduction each seed one plant. Plants produce challenges for account of individ the way animals. Continuos grafting to form one physiological indivd comprises. Continuous gen yeast growing in the lab bench cell fission. Discete migratory birds seasonal envi winter in s americo to.