Nomenclature Code Scope

The question asks about the organisms, besides plants, that are included under the rules of the International Code of Nomenclature adopted in 2017, specifically the Shenzhen Code.

This code, officially known as the International Code of Nomenclature for algae, fungi, and plants (ICNafp), governs the formal botanical naming of plants, fungi, and several other groups of organisms, including algae. Understanding the scope of this code helps identify which organisms are included in its rules for naming.

Shenzhen Code Inclusions

The Shenzhen Code (2017) and subsequent versions cover:

• All organisms traditionally treated as plants.
• All organisms traditionally treated as algae.
• All organisms traditionally treated as fungi.
• Fossils of algae, fungi, and plants.

It's important to note specific exclusions or clarifications within the code's scope. While it covers vast groups, some specific taxa might fall under different nomenclature codes or have specific rules.

Let's examine the options based on this understanding:

• Option 1: Prokaryotes together with all algae and fungi, except their fossils. This is incorrect because prokaryotes are generally covered by the International Code of Nomenclature of Prokaryotes (ICNP), not the ICNafp. Also, the ICNafp includes fossils.
• Option 2: All algae and fungi along with their fossils, except Microsporidia. This option aligns with the scope of the ICNafp. The code explicitly includes all algae and fungi and their fossil forms. Microsporidia, although once considered fungi, are now often classified elsewhere (e.g., within Protista or as a separate phylum related to fungi but with distinct characteristics) and are typically treated under the International Code of Zoological Nomenclature (ICZN) or are sometimes considered outside the strict scope of botanical/fungal nomenclature codes. Therefore, their exclusion from the ICNafp aligns with modern taxonomic treatments.
• Option 3: Prokaryotes and algae, except Microsporidia. This is incorrect as it includes prokaryotes (covered by ICNP) and only mentions algae and Microsporidia exclusion, missing fungi and fossils.
• Option 4: Photosynthetic algae and fungi. This is too restrictive. The ICNafp covers all algae, regardless of whether they are photosynthetic (e.g., red algae, brown algae, green algae) or non-photosynthetic (e.g., oomycetes, which were historically treated as fungi but are now considered stramenopiles within algae), and all fungi.

Conclusion on Nomenclature Coverage

Based on the scope defined by the International Code of Nomenclature for algae, fungi, and plants, the organisms included along with plants are all algae, all fungi, and their fossil counterparts, with specific exceptions like Microsporidia which may fall under different codes or taxonomic treatments.