Coral Biology and Ecology Concepts

Corals are marine animals that resemble rocks or plants but are actually invertebrates. They thrive in warm, shallow coastal waters and form symbiotic relationships with algae, which provide them with food and vibrant colors. Coral polyps build protective calcium carbonate skeletons, contributing to the formation of coral reefs over thousands of years. These reefs are vital marine habitats, supporting diverse marine life.

What type of organisms are corals classified as?

• Plants

• Minerals

• Marine invertebrates

• Fungi

Where do corals typically live?

• Cold, deep sea trenches

• Freshwater lakes

• Warm, shallow coastal waters

• Deep ocean waters

What role do microscopic algae play in the life of corals?

• They help corals move

• They offer food through photosynthesis

• They provide structural support

• They protect corals from predators

What happens to corals when the algae they depend on die?

• They turn blue

• They grow faster

• They turn white

• They become poisonous

What is the term used to describe the whitening of corals due to algae loss?

• Coral whitening

• Coral fading

• Coral bleaching

• Coral paling

How are corals similar to jellyfish?

• They both are vertebrates

• They both live in freshwater

• They both float freely

• They both have a central mouth and stinging tentacles

What is a coral polyp?

• A type of fish

• A soft individual organism within a coral colony

• A type of seaweed

• A mineral deposit

What is the main structural component that corals build for protection?

• Chitin exoskeletons

• Silica shells

• Calcium carbonate skeletons

• Protein fibers

Over time, what do the remains of coral skeletons form?

• Sand dunes

• Clay deposits

• Limestone rocks

• Granite boulders

How do coral colonies grow over time?

• By linking up with other colonies

• By moving to new locations

• By splitting into separate colonies

• By consuming other corals