#1
Which type of coral is commonly found in shallow, warm waters and forms massive structures?
Soft coral
Stony coral
Black coral
Fire coral
#2
What is the significance of the Great Barrier Reef?
Largest living structure on Earth
Deepest coral reef in the world
Oldest coral reef in existence
Only reef with black coral
#3
What is the primary function of the mucus produced by corals?
Attracting prey
Defense against predators
Enhancing photosynthesis
Structural support
#4
What is the primary factor responsible for coral calcification?
Carbon dioxide absorption
Calcium carbonate deposition
Nitrate assimilation
Sulfate precipitation
#5
What is the primary function of the nematocysts in coral polyps?
Reproduction
Digestion
Predator defense
Symbiotic relationships
#6
What is the primary role of zooxanthellae in coral reefs?
Providing structural support to corals
Predatory defense for corals
Producing oxygen through photosynthesis
Aiding in coral reproduction
#7
Which environmental factor is a major threat to coral reefs?
Low salinity
High water temperature
Decreased acidity
Reduced sunlight
#8
Which oceanic zone is characterized by the presence of coral reefs?
Abyssal zone
Pelagic zone
Benthic zone
Coral zone
#9
How does overfishing impact coral ecosystems?
Promotes coral growth
Enhances biodiversity
Disrupts ecological balance
Improves water quality
#10
Which of the following is a symbiotic relationship between coral and a fish species?
Parasitism
Commensalism
Mutualism
Competition
#11
What is coral bleaching?
A natural process in coral growth
Loss of color due to stress, often from high temperatures
Enhanced pigmentation in corals
Formation of symbiotic relationships
#12
Which international agreement focuses on the conservation and sustainable use of coral reefs?
Montreal Protocol
Kyoto Protocol
Cartagena Protocol
Coral Reef Conservation Act
#13
What is the primary source of energy for coral reefs?
Geothermal heat
Sunlight
Chemical reactions
Tidal energy
#14
Which type of pollution poses a threat to coral reefs by promoting algal growth?
Air pollution
Thermal pollution
Nutrient pollution
Noise pollution
#15
Which factor contributes to the phenomenon known as 'coral disease'?
Insufficient sunlight
Pathogenic microorganisms
High water salinity
Low nutrient levels