Tropical coral reefs: Practice Questions

Which of the following describes the correct function of stinging cells (nematocysts) in a coral polyp?

According to the Darwin–Dana–Daly theory, what is the primary geological driver that causes a barrier reef to transition into an atoll?

According to the Darwin–Dana–Daly theory of atoll formation, which sequence of events correctly describes the geological transition of a coral reef as a volcanic island subsides?

In a tropical coral reef ecosystem, which organism has evolved specialised grinding teeth specifically to feed on the coral structure?

Why is the water surrounding healthy tropical coral reefs typically clear and low in nutrients?

According to the Darwin–Dana–Daly theory of atoll formation, what process causes a fringing reef to eventually become a barrier reef?

Describe the specific adaptation used by trigger fish to protect themselves from predators within the crevices of a coral reef.

In the context of the Darwin–Dana–Daly theory, explain why a fringing reef eventually turns into a barrier reef.

Tropical coral reefs are highly productive ecosystems built by colonial animals.

(a) State the name of the main chemical compound that forms the rigid skeleton of a coral polyp.
(b) Describe two abiotic factors that are essential for the distribution of healthy tropical coral reefs.
(c) Explain the mutualistic relationship between coral polyps and zooxanthellae, identifying what each organism provides for the other.

(a) Describe the symbiotic relationship between coral polyps and zooxanthellae, identifying what each organism provides to the other.
(b) Explain the specific role of the calcium carbonate skeleton in the formation of a coral reef colony.