(2) As can be seen from the figure, both rosewood and mung bean belong to the family Papilionaceae and Leguminosae. The most basic taxonomic unit is species.
(3) According to the analysis, the larger the taxon, the less its * * * features, the more species it contains, and the farther its genetic relationship is; The smaller the taxon, the more * * * features, the fewer biological species and the closer the genetic relationship. ? According to the classification index, mung bean and kidney bean belong to the same family, Albizia Albizia and rosewood belong to the same order, and Albizia Albizia and kidney bean belong to the same order, with the smallest genus, family and order, so mung bean and kidney bean belonging to the same family have the closest genetic relationship, while mung bean and Albizia Albizia have the farthest genetic relationship and the smallest similarity.
(4) When angiosperms are classified, flowers, fruits and seeds are often used as the important basis for classification.
(5) The larger the taxon, the fewer the same features, the more species it contains, and the farther the genetic relationship; In the classification level of the chart, this order contains the most biological species.