Skip to content
Back to quiz
6. Reefs protect what percentage of the coast from erosion?
7. Are reef building corals slow or fast growing?
8. What type of reef is separated from the land?
- Fringing reef
- Barrier reef
- Atolls
9. The mouth in hard corals leads to
- the epidermal layer
- the gastrovascular cavity
- nematocysts
10. Non reef building corals can live in total darkness?
11. Are coral polyps carnivorous?
12. Eggs remain in gastrovascular cavities, fertilised by motile sperm is the action of....
13. Where do non-reef building corals get energy from?
- Corallites
- Plankton and suspended particles
- Zooxanthellae
14. Do non-reef building corals have slower or faster growth rates than reef building corals?
15. Reef building corals are restricted to warm, shallow, clear waters
16. Coral reefs remove --- kg of CO2 a year?
- 400 billion
- 700 billion
- 100 billion
- 200 billion
17. Spawning millions of gametes into water for external fertilisation is the action of....
18. Coral reefs are home to how many species of fish
19. What is the correct sequence of coral larvae?
- Settles on suitable substratum -> metamorphoses into polyp -> divides - budding -> clonal colony
- metamorphoses into polyp -> settles on suitable substratum -> divides - budding -> clonal colony
- clonal colony -> metamorphoses into polyp -> metamorphoses into polyp -> divides - budding
20. Corals need low water movement for growth