Living BeingsCompare species
Welwitschia
Welwitschia mirabilis
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 | Welwitschia | African Savanna Elephant |
|---|---|---|
| Physical traits | A low, woody stem supports two long strap-like leaves. Torn leaf tips can create the impression of many leaves, although the underlying arrangement remains a pair. | 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 | Arid landscapes of the Namib region expose plants to intense sun, wind and scarce, irregular water. | 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 persistent green leaves carry out photosynthesis. Water availability includes moisture in the soil; the plant should not be described as depending exclusively on direct fog absorption. | Grasses, leaves, bark and other plant material make up its diet. The trunk gathers food and moves it to the mouth. |
| Behavior and activity | Data unavailable | 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 | Male and female cones occur on different plants. Insects visit the reproductive structures, and winged seeds provide a means of dispersal. | 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 | Native to Namibia and Angola. Its unusual form belongs to a geographically restricted desert lineage. | Native to sub-Saharan Africa. This account follows the savanna-elephant species concept rather than treating all African elephants as one species. |
| Ecological role | Its survival strategy illustrates a distinctive response to desert conditions, rather than a plant that has stopped evolving. | Feeding and movement alter vegetation, and dung transfers seeds and nutrients. Habitat fragmentation and killing for ivory threaten populations. |
| Distinctive adaptations | Continued growth from protected leaf bases allows the same foliage to persist despite damage at its exposed ends. | Data unavailable |
Classification
Shared ancestry
Closest shared taxon: Eukaryota.