Q. Consider the following statements:
1.Most of the world’s coral reefs are found in tropical waters.
2.More than one-third of the world’s coral reefs are located in the territories of Australia, Indonesia, and the Philippines.
3.Coral bleaching causes corals to expel tiny photosynthetic algae (zooxanthellae), draining them of their color and turning the corals completely white.
Which of the statements given above is/are correct?
Answer: D
Notes:
Explanation:
- Statement 1 is correct: Coral reefs are predominantly found in tropical waters, generally between the Tropics of Cancer and Capricorn.
- Statement 2 is correct: Over one-third of global coral reefs are located in Australia, Indonesia, and the Philippines, forming part of the “Coral Triangle.”
- Statement 3 is correct: Coral bleaching occurs when corals are stressed due to changes in temperature, light, or nutrients. They expel their symbiotic algae (zooxanthellae), losing both their color and a primary food source, which turns the corals white.
Source- Downtoearth
