Which Statement About Biodiversity In Coral Reefs Is Accurate

The correct answer is 1 and 3 only.

Key Points

  • Corals are mainly found in tropical oceans and seas, typically between the Tropics of Cancer and Capricorn. This is because corals thrive in warm, clear, and shallow water where lots of sunlight filters through, as they have a symbiotic relationship with photosynthesizing algae.
  • While it’s accurate that some fish species do lay their eggs in coral colonies, not all or even most fish species do. Therefore, this statement is not correct.
  • This statement is correct. Coral reefs, often referred to as the “rainforests of the sea,” are known for their immense biodiversity. They are one of the most biodiverse ecosystems on the planet, potentially surpassing even the richness of tropical rainforests.

Additional Information

  • Symbiotic Relationship: Corals have a symbiotic relationship with a type of algae called zooxanthellae. The corals provide the algae with a protected environment and the compounds they need for photosynthesis. In return, the algae produce oxygen and help the coral to remove wastes. Most importantly, they supply the coral with glucose, glycerol, and amino acids, which are the products of photosynthesis that the corals use to produce proteins, fats, and carbohydrates, and build their skeletons.
  • Importance to Humans: Coral reefs are very important to humans, providing a crucial source of income for millions of people. They also serve as nurseries for many species of fish and marine life, making them indispensable for fisheries and the global food supply. Additionally, coral reefs act as natural barriers, protecting coastlines from storms and erosion.
  • Threats: Unfortunately, coral reefs around the world are under threat due to a number of factors. Climate change and the associated ocean warming and acidification, overfishing, destructive fishing practices, pollution, and coastal development are among the most significant threats.
  • Bleaching Events: Corals can experience what is known as “bleaching” when they are stressed by changes in conditions such as temperature, light, or nutrients. During these events, the corals expel the symbiotic algae living in their tissues causing the coral to turn completely white. While bleached corals are not dead, they are at a higher risk of dying.
  • Conservation Efforts: Efforts are being made globally to conserve and protect these vital ecosystems. Marine protected areas (MPAs) are one of the most popular tools for coral reef conservation. Restoration practices, like coral gardening and artificial reefs, are also being implemented in many parts of the world.
  • Species Diversity: There are about 800 known species of reef-building coral worldwide. They come in a wi
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