Living BeingsCompare species
Saguaro
Carnegiea gigantea
African Baobab
Adansonia digitata
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 Baobab |
|---|---|---|
| Physical traits | A pleated green trunk may develop large upward branches. Spines cover the surface, and flowers form near growing stem tips. | Thick, fibrous bark surrounds a broad trunk. Each compound leaf has several leaflets radiating from a central point. |
| Habitat and range | Suitable Sonoran Desert sites provide the temperature and rainfall conditions needed for establishment and survival. | A terrestrial tree of tropical Africa, it is adapted to seasonally dry conditions and is also planted in gardens and settlements. |
| Diet and nutrition | The green stem performs photosynthesis, while widespread shallow roots rapidly take up water after rain. | Leaves produce sugars through photosynthesis. Water and mineral nutrients are taken up through the roots. |
| Behavior and activity | Stem expansion accommodates stored water. Growth and the development of arms occur over a long period. | Data unavailable |
| Reproduction and life cycle | Flowers are followed by fleshy fruits containing many seeds. Seedling establishment is much less frequent than seed production. | Large, hanging white flowers develop into capsules containing seeds embedded in pale, powdery pulp. New trees can be grown from seed. |
| Geographic distribution | The native range is within the Sonoran Desert, but the cactus does not occupy every part of that desert. | Native to Africa and cultivated elsewhere. The accompanying photograph shows a planted specimen in Madagascar; that location should not be confused with the native range of every baobab species. |
| Ecological role | Flowers and fruits feed wildlife, while large stems provide shelter and nesting opportunities. | Its flowers, fruit and extensive woody structure provide biological resources. The familiar name baobab also applies to other species, which should not be confused with this one. |
| Distinctive adaptations | Pleated water storage and a broad, shallow root system help exploit brief rainfall events. | A substantial trunk and drought-resistant growth form help distinguish this tree from many humid-forest trees. |
| 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: Pentapetalae.