Quiz on Algae and Marine Ecosystems

What percentage of the Earth's oxygen is produced by algae?

• 30-40%

• 70-80%

• 10-20%

• 50-60%

Which of the following is a primary role of algae in aquatic ecosystems?

• Carbon sequestration

• Soil stabilization

• Water filtration

• Habitat for mammals

What is the primary function of mangroves in coastal areas?

• Carbon sequestration

• Producing oxygen

• Coastal protection and erosion control

• Providing food for fish

Which type of algae is known for its rapid growth and can grow up to 2 feet per day?

• Sugar Kelp

• Giant Kelp

• Feather Boa Kelp

• Bull Kelp

What role do sea otters play in kelp forest ecosystems?

• They enhance photosynthesis

• They control herbivore populations

• They provide nutrients to kelp

• They compete with kelp for resources

Which of the following is NOT a benefit provided by mangroves?

• Habitat for marine life

• Natural water filtration

• Production of freshwater

• Coastal erosion control

What is the primary pigment that gives kelp its brown color?

• Phycocyanin

• Chlorophyll

• Carotenoids

• Fucoxanthin

Which of the following is a characteristic of kelp?

• They thrive in freshwater

• They can reproduce asexually

• They are true plants

• They have a root system

What is the term for the process by which mangroves capture and store carbon?

• Carbon cycling

• Carbon offsetting

• Green energy

• Blue carbon

Which of the following is a common type of non-algae ocean plant?

• Kelp

• Seagrasses

• Coral

• Phytoplankton