Living BeingsCompare species
Saguaro
Carnegiea gigantea
African Savanna Elephant
Loxodonta africana
How to compare two organisms
Choose two species and trace their closest shared group. Then compare a trait with the same definition on each side. Check the units, life stage and context before interpreting a measurement or range.
Missing data means that the collection lacks a sourced value. Where a characteristic does not apply to a lineage, the comparison labels it separately. Open the two profiles for context and follow their sources before drawing a conclusion.
Evidence from the profiles
Compare their characteristics
| Trait | Saguaro | African Savanna Elephant |
|---|---|---|
| Physical traits | A pleated green trunk may develop large upward branches. Spines cover the surface, and flowers form near growing stem tips. | Broad ears, a long trunk and column-like legs give the animal its familiar outline. The trunk tip has two finger-like projections. Both sexes can develop tusks. |
| Habitat and range | Suitable Sonoran Desert sites provide the temperature and rainfall conditions needed for establishment and survival. | Savannas and open woodland provide a shifting mixture of browse, grass, shade and drinking water. Seasonal water availability influences the places that herds use. |
| Diet and nutrition | The green stem performs photosynthesis, while widespread shallow roots rapidly take up water after rain. | Grasses, leaves, bark and other plant material make up its diet. The trunk gathers food and moves it to the mouth. |
| Behavior and activity | Stem expansion accommodates stored water. Growth and the development of arms occur over a long period. | Female relatives and their young form long-lasting social groups. Older females hold knowledge of familiar routes and resources; adult males have a different pattern of association. |
| Reproduction and life cycle | Flowers are followed by fleshy fruits containing many seeds. Seedling establishment is much less frequent than seed production. | Calves are born alive and depend on milk and extended social care. Learning from other elephants is an important part of growing up. |
| Geographic distribution | The native range is within the Sonoran Desert, but the cactus does not occupy every part of that desert. | Native to sub-Saharan Africa. This account follows the savanna-elephant species concept rather than treating all African elephants as one species. |
| Ecological role | Flowers and fruits feed wildlife, while large stems provide shelter and nesting opportunities. | Feeding and movement alter vegetation, and dung transfers seeds and nutrients. Habitat fragmentation and killing for ivory threaten populations. |
| Distinctive adaptations | Pleated water storage and a broad, shallow root system help exploit brief rainfall events. | Data unavailable |
| Conservation | Habitat change, fire and unsuitable climate can affect recruitment and survival. Long-lived adults alone do not demonstrate successful regeneration. | Data unavailable |
Classification
Shared ancestry
Closest shared taxon: Eukaryota.