Plankton

Which of the following is a primary producer in aquatic ecosystems?

• Fish

• Phytoplankton

• Jellyfish

• Sea urchins

What is the primary pigment responsible for photosynthesis in phytoplankton?

• Chlorophyll a

• Chlorophyll b

• Carotenoids

• Phycobilins

Which environmental factor is most important for the growth of phytoplankton?

• Temperature

• Salinity

• Oxygen levels

• Sunlight availabilities

What role do phytoplankton play in the carbon cycle?

• They release carbon dioxide through respiration

• They absorb carbon dioxide during photosynthesis

• They convert carbon dioxide into methane

• They have no impact on the carbon cycle

Which of the following is NOT a common type of phytoplankton?

• Diatoms

• Dinoflagellates

• Copepods

• Cyanobacteria

What is the term for the study of oceans?

What is the name of the tiny organisms that live symbiotically with corals?

What is the largest fish species in the world?

What is the study of fish called?

Name any threat to the coral reef.