Introduction to Marine Biology

Coral 101 QUIZ

Due April 14, 2026 at 9:00 AM · 5 multiple-choice questions · Practice quiz

1. Corals are classified in the animal kingdom as: Animals (cnidarians) Plants Fungi Unrelated mixed microbes only

2. Reef-building corals deposit a hard skeleton made mainly of: Silica glass Calcium carbonate Chitin Wood lignin

3. Hundreds or thousands of connected coral polyps sharing tissue are best called: A single-celled protist A colony A fish school A seaweed holdfast

4. Zooxanthellae living in coral tissue are best described as: Marine fungi Predatory flatworms Photosynthetic algae that trade nutrients with the coral Types of coral skeleton

5. On natural reefs, prolonged ocean warming often stresses corals because: Moon phases remove all oxygen One rainy afternoon always kills polyps Heat pushes corals and symbionts past tolerable limits Corals require freshwater to breathe