Definition: In the context of biology, a semimonarchically arranged structure is one that has both a central and an outer monochromatous chromosome (a chromosome with two homologous chromosomes). This type of arrangement is often found in organisms such as plants and animals where the central chromosome acts as the nucleus. The term "semimonarchically" refers to the idea that these structures are analogous to semiaquatic or semi-herbivorous organisms, which rely on water for their