Which of the following factors are needed for the growth of corals 1 Freshwater 2 Clear shallow salt...........

Geography and Environment India - Water bodies

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Which of the following factors are needed for the growth of corals?

1. Freshwater

2. Clear shallow salt water

3. Plenty of sunlight for photosynthesis

4. Warm water between 23 oc and 25 oc

Select the correct answer using the code given below.

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1, 3 and 4 only

2, 3 and 4 only

1 and 2 only

1, 2, 3 and 4

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Explanation:

- Freshwater: Corals do not thrive in freshwater environments. They need salty seawater to survive.

- Clear shallow salt water: Corals require clear, shallow, salty water, as this allows sunlight to penetrate and reach the symbiotic algae (zooxanthellae) that live within coral tissues. These algae are crucial for coral’s photosynthesis and energy.

- Plenty of sunlight for photosynthesis: Sunlight is essential for the photosynthetic process, providing the energy that sustains coral growth.

- Warm water between 23°C and 25°C: Corals flourish in warm water temperatures. The specified temperature range is favorable for their growth.

The correct answer is marked by the conditions "Clear shallow salt water," "Plenty of sunlight for photosynthesis," and "Warm water between 23°C and 25°C," as essential elements supporting coral growth.

Correct Answer: Option 2, 2, 3 and 4 only