Consider the following about ldquo Cold water coral rdquo and identify the correct one s 1 They are ...........

Geography World - Water Bodies

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Consider the following about “Cold-water coral” and identify the correct one/s.

1. They are rich in zooxanthellae allowing them to survive in waters with low light insolation.

2. They can be found in the deep waters of continental shelves and offshore canyons.

3. These corals feed on zooplankton which is one of the sources of their energy.

4. These cannot be found in tropical regions.

Select the correct answer using the codes below.

1 and 2 only

2 and 3 only

1 and 4 only

3 and 4 only

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Explanation:

1 and 2: Corals that inhabit the colder deep waters of continental shelves and offshore canyons, ranging from 50 to over 1000m depths. They lack zooxanthellae and may build reef-like structures or occur solitarily.
Statement 3: Cold-water corals are different from their warm-water counterparts because they do not contain symbiotic algae for photosynthesis and grow more slowly. Cold-water corals obtain all their energy from organic matter and zooplankton, which they catch from the currents drifting past
Statement 4: Cold-water corals can be found over a wide range of latitudes, from tropical to Polar Regions, and from the shallow to the deep seas.
Their distribution is largely defined by water temperatures, which must generally be between 4° and 12°C. At high latitudes, these conditions are generally found in relatively shallow waters.