No the Correct answer is A. Algal component is called Phycobiont and fungal component is called Mycobiont

Lichens are a symbiotic existence of coral reef with zooxanthellae.

- Lichens are unique organisms that result from a mutualistic association between a fungus and an alga or a cyanobacterium. This partnership is known as a symbiotic relationship, where both organisms benefit from each other's presence.
- The fungal partner provides a protective structure for the alga or cyanobacterium, while the algal partner produces organic compounds through photosynthesis that can be utilized by the fungus.
- Lichens are commonly found in various habitats, including rocks, trees, and soil. They can tolerate extreme conditions such as cold, heat, drought, and high levels of radiation, making them highly adaptable organisms.
- Within the lichen structure, the fungal partner is responsible for providing structural support and protection against desiccation, while the algal or cyanobacterial partner is responsible for photosynthesis and the production of organic compounds.
- In the case of coral reefs, lichens exist in a symbiotic relationship with zooxanthellae. Zooxanthellae are photosynthetic dinoflagellates that live within the tissues of coral polyps.
- The coral polyps provide a protected environment and access to sunlight for the zooxanthellae, while the zooxanthellae provide organic compounds through photosynthesis that contribute to the nutrition of the coral polyps.
- This mutualistic relationship is crucial for the survival and growth of coral reefs. The organic compounds produced by the zooxanthellae serve as a major energy source for the coral polyps, helping them to build their calcium carbonate skeletons and maintain their vibrant colors.
- Coral reefs are highly diverse ecosystems that support a wide range of marine organisms. The symbiotic relationship between lichens and zooxanthellae contributes to the overall health and productivity of coral reefs.
- However, coral reefs are currently facing significant threats due to climate change, pollution, and overfishing. These factors can disrupt the delicate balance of the symbiotic relationship between lichens and zooxanthellae, leading to coral bleaching and the decline of coral reef ecosystems.
- Therefore, it is essential to protect and conserve coral reefs to ensure the continued existence of this unique symbiotic relationship and the biodiversity it supports.