5.4-5.5

5-5
Coral reefs repersent a mutually beneficial relationship between the polyps and
the single-celled algae called zooxanthellae ("zoh-ZAN-thel-ee") that live in the tissues
of the polyps. The algae provide the polyps with color, food, and oxygen through photosynthesis.
The polyps, in turn , provide the algae with a well-protected home and some of their nutrienrs.
Figure 6 on p.s53 in Supplement 11 shows some components and interactions in a coral reef ecosystem.
生物與生物之間會互相影響，這裡展示了一個珊瑚礁內互利共生的例子。
在珊瑚礁內，珊瑚蟲與一種名叫zooxanthellae的單細胞藻類扮演著互利共生的關係，這種藻類住在珊瑚蟲的組織裡。
這些藻類透過光合作用，提供氧氣，食物和顏色給珊瑚蟲。珊瑚蟲則提供一個安全，受保護的環境和提供一些營養素給藻類。
在p.s53的圖6展示了一些珊瑚礁生態系中構成互相影響的例子。