Living BeingsCompare species
European Starfish
Asterias rubens
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 | European Starfish | African Baobab |
|---|---|---|
| Physical traits | Adults usually have five broad arms around a central disc. The upper surface is rough, and color varies. | Thick, fibrous bark surrounds a broad trunk. Each compound leaf has several leaflets radiating from a central point. |
| Habitat and range | Rocky, sandy and mixed seabeds support this starfish, including areas with abundant bivalves. | A terrestrial tree of tropical Africa, it is adapted to seasonally dry conditions and is also planted in gardens and settlements. |
| Diet and nutrition | Bivalves are important prey. A starfish can use tube feet to gain access and digest food with its everted stomach. | Leaves produce sugars through photosynthesis. Water and mineral nutrients are taken up through the roots. |
| Behavior and activity | Slow movement across the seabed brings individuals into contact with food and other starfish. | Data unavailable |
| Reproduction and life cycle | Eggs and sperm are released into seawater. Larvae develop in the plankton before settling and changing into juveniles. | Large, hanging white flowers develop into capsules containing seeds embedded in pale, powdery pulp. New trees can be grown from seed. |
| Geographic distribution | The species is associated with the northeastern Atlantic and adjacent European seas. Local records are more informative than a generalized global range. | 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 | Predation can influence shellfish communities. Its reproductive investment can change with temperature and food supply. | 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 | A water-vascular system powers tube feet, and damaged arms can regenerate under suitable conditions. | A substantial trunk and drought-resistant growth form help distinguish this tree from many humid-forest trees. |
| Conservation | Laboratory warming experiments reveal possible sensitivities, not a universal prediction for every wild population. No formal status is assigned here. | Data unavailable |
Classification
Shared ancestry
Closest shared taxon: Eukaryota.