I'd say to help the reader quickly locate geographic regions.
Answer:
Two key adaptations they have are the ability to survive in waterlogged and anoxic (no oxygen) soil, and the ability to tolerate brackish waters. Some mangroves remove salt from brackish estuarine waters through ultra-filtration in their roots.
The characteristic that is distinguished in how fungi are classified into five groups is by the their reproductive structure and how they reproduce sexually. Fungi are classified into: Chytridiomycota, Zygomycota, Glomeromycota, Ascomycota and Basidiomycota.
