Coral Reefs and Ocean Acidification Review Questions

Front

What is coral bleaching?

Back

Coral bleaching is a phenomenon where corals lose their vibrant colors and turn white due to stress factors such as increased water temperature, pollution, or changes in salinity. This occurs when corals expel the symbiotic algae (zooxanthellae) living in their tissues.

Front

What is the primary cause of coral bleaching?

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The primary cause of coral bleaching is an increase in ocean temperatures, which can be attributed to climate change.

Front

How does ocean acidification affect coral reefs?

Back

Ocean acidification, caused by increased CO2 absorption, reduces the availability of carbonate ions, which are essential for corals to build their calcium carbonate skeletons, leading to weaker structures.

Front

What role do zooxanthellae play in coral health?

Back

Zooxanthellae are symbiotic algae that live within coral tissues and provide energy to corals through photosynthesis, contributing to their growth and color.

Front

What is the impact of rising sea temperatures on marine biodiversity?

Back

Rising sea temperatures can lead to reduced oxygen levels in water, forcing marine species to migrate to cooler areas, which can disrupt local ecosystems.

Front

Define salinity and its importance in marine ecosystems.

Back

Salinity is the concentration of salts in water. It is crucial for maintaining osmotic balance in marine organisms and affects species distribution and health.

Front

What is the classification of the lightning whelk?

Back

The lightning whelk is classified under the class Gastropoda, which includes snails and slugs.

Front

What is squalene and its source?

Back

Squalene is a liquid lipid compound harvested from the liver of sharks, often used in cosmetics and health supplements.

Front

Explain the relationship between ocean temperature and coral health.

Back

Coral health is directly affected by ocean temperature; higher temperatures can lead to stress and bleaching, while optimal temperatures support coral growth.

Front

What are the consequences of decreased biodiversity in coral reefs?

Back

Decreased biodiversity in coral reefs can lead to ecosystem instability, reduced resilience to environmental changes, and loss of species that contribute to the reef's health.