The organizational unit that includes the fewest species of organisms is the species itself. A species is defined as a group of organisms that can interbreed and produce fertile offspring, and it typically encompasses a single type of organism. In contrast, higher taxonomic ranks like genus, family, or order include multiple species, making the species level the most specific and narrow classification in biological taxonomy.
For both plants and animals it is the species. But there are subspecies in animals and cultivars in plants.
Species. Explanation : Let us consider the next level of classification which is Genus. Genus is a group of closely related species. So, there are more number of organisms here as there are more than one specie. The next level is Family which is a group of closely related genera (Plural of genus). Now, here, there many genera which in turn contains many species. The levels of classification are such that each level contains more number of organisms than the previous level. So, it is called a Hierarchy of classification.
Based on current data, Monaco is considered to have the fewest species of mammals in the world with only a handful of species present.
Low diversity refers to ecosystems with few different types of organisms, resulting in a limited range of species. This can have negative impacts on the ecosystem's resilience and stability. Increasing diversity can help improve ecosystem function and make it more resilient to disturbances.
During primary succession, an ecosystem provides the fewest habitats for organisms immediately after a disturbance, such as a volcanic eruption or glacial retreat, when it is still in the earliest stages of development. At this point, the environment is largely barren, lacking soil and vegetation, which limits the availability of niches for organisms. As succession progresses, pioneer species like lichens and mosses begin to establish themselves, gradually transforming the habitat and increasing biodiversity. Thus, the initial phase features the least habitat complexity and variety for organisms.
Biosphere contains the fewest number of species compared to community and population.
For both plants and animals it is the species. But there are subspecies in animals and cultivars in plants.
The order of the Monotremata contains the fewest species, with only five extant species. These species include the platypus and four species of echidnas.
Glucose
Species. Explanation : Let us consider the next level of classification which is Genus. Genus is a group of closely related species. So, there are more number of organisms here as there are more than one specie. The next level is Family which is a group of closely related genera (Plural of genus). Now, here, there many genera which in turn contains many species. The levels of classification are such that each level contains more number of organisms than the previous level. So, it is called a Hierarchy of classification.
Species within the class Cephalaspidomorphi, which includes the lampreys, comprise the smallest number of species among vertebrates, with around 38 recognized species.
population
Anarctica
Based on current data, Monaco is considered to have the fewest species of mammals in the world with only a handful of species present.
Population
An order typically contains fewer organisms than a family. Orders are higher in the taxonomic hierarchy and are composed of several families, each containing multiple species. Families, on the other hand, are more specific and include a smaller number of closely related species.
Organisms in the domain Archaea are considered to share the fewest characteristics with other organisms. They have unique cellular structures and biochemical properties that distinguish them from bacteria and eukaryotes.