Fig. 7
![Fig. 7](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12918-015-0232-5/MediaObjects/12918_2015_232_Fig7_HTML.gif)
Structural parameter distributions of Reconstructed networks. Distribution of different structural parameters of 143 different species classified in two groups of facultative and non-facultative organisms with size of 59 and 84 species, respectively. The distributions of a number of genes used in reconstructed metabolic model, b number of input metabolites (transporters), c average in- or out-degree of the networks considering directed links, d average of shortest path between an input metabolite and each of biomass ingredients, e the average of distances between input metabolites and f fraction of essential reactions. p-values are calculated by the Kruskal-Wallis test