HM Unit 5 Test

Front

What are coral reefs often compared to?

Back

Tropical rainforests are often compared to coral reefs due to their high biodiversity and complex ecosystems.

Front

What percentage of the ocean's biodiversity lives in coral reefs?

Back

Approximately 25% of the ocean's biodiversity is found in coral reefs.

Front

True or False: Some species of kelp are used in ice cream.

Back

True. Certain species of kelp are used as thickening agents in ice cream.

Front

Which group of algae contains mostly freshwater species and is most similar to land plants?

Back

Green algae are primarily freshwater species and share similarities with land plants.

Front

What structure allows the leaf-structures of seaweed to float?

Back

The Bulb, also known as Gas Bladder or Pneumatocyst, allows seaweed leaf structures to float.

Front

Define coral reefs.

Back

Coral reefs are underwater structures made from calcium carbonate secreted by corals, providing habitat for diverse marine life.

Front

What role do coral reefs play in marine ecosystems?

Back

Coral reefs provide habitat, food, and breeding grounds for many marine species, contributing to biodiversity.

Front

What are the main threats to coral reefs?

Back

Main threats include climate change, ocean acidification, pollution, overfishing, and destructive fishing practices.

Front

What is the significance of biodiversity in coral reefs?

Back

Biodiversity in coral reefs enhances ecosystem resilience, supports food webs, and provides resources for human use.

Front

What is the difference between hard and soft corals?

Back

Hard corals build calcium carbonate skeletons, while soft corals do not and are more flexible.