Coral Reef Ecosystem Knowledge Assessment

The video explores coral reefs, highlighting their importance as ecosystems with diverse marine life. It explains the structure and formation of reefs, the different zones within them, and the various creatures that inhabit these areas. The role of plants and the changes in reef life at night are discussed. The video also addresses human interaction with reefs, the threats they face, and conservation efforts to protect them.

What is a key characteristic of coral reefs that makes them vital ecosystems?

• They do not require sunlight to survive.

• They are made entirely of plants.

• They are home to more sea creatures than any other ocean part.

• They are found only in deep ocean waters.

What are coral reefs primarily made of?

• Seaweed

• Groups of animals called corals

• Sand

• Rocks

Which type of coral is responsible for forming reefs?

• Sponges

• Hard coral

• Soft coral

• Seaweed

What is the deepest part of a coral reef called?

• Reef flat zone

• Crest zone

• Reef slope zone

• Coral base

How do some animals use camouflage on coral reefs?

• To change the reef's color

• To hide from predators or while hunting

• To attract mates

• To build nests

What role do algae play in coral reef ecosystems?

• They are the main predators in the reef.

• They form the base of the reef structure.

• They clean the water around the reef.

• They provide food for coral by using sunlight.

What is one function of seagrass in coral reefs?

• It provides shelter for fish.

• It forms coral skeletons.

• It repels predators.

• It traps mud from rivers.

What is a major threat to coral reefs mentioned in the video?

• Excessive sunlight

• Warming ocean waters

• Overgrowth of coral

• Increased fish population

How can people help protect coral reefs?

• By creating artificial reefs

• By participating in clean-up efforts and respecting preserves

• By fishing more in reef areas

• By touching the reefs to clean them

What happened to the Great Barrier Reef in 2010?

• It experienced a massive coral growth.

• It was completely destroyed by a storm.

• A ship scraped along it, causing damage and an oil spill.

• It was declared a world heritage site.