Aquatic Ecosystems and Their Components

The video covers ecosystems, focusing on aquatic types, including marine and freshwater ecosystems. It discusses the components of ecosystems, such as biota, energy, and their subdivisions. The video explains the role of salinity, temperature, and pH in biodiversity. It also details the types of biota in aquatic environments, including plankton, necton, bentos, and decomposers, and their roles in the ecosystem.

What are the three main components of an ecosystem?

• Biota, Biod, Energy

• Biota, Water, Energy

• Biota, Biod, Water

• Biota, Biodiversity, Energy

What percentage of Earth's water is freshwater?

• 2%

• 10%

• 20%

• 5%

Which of the following is NOT a major ocean?

• Arctic

• Atlantic

• Mediterranean

• Indian

Which ecosystems are known for having the highest productivity and biodiversity?

• Deserts and Grasslands

• Tundras and Taigas

• Savannas and Prairies

• Coral Reefs and Mangrove Forests

What is a major source of freshwater for most people worldwide?

• Oceans

• Wetlands

• Rivers

• Lakes

Which type of freshwater ecosystem can influence local climate similar to oceans?

• Wetlands

• Streams

• Lakes

• Rivers

What is the primary factor influencing species assemblage in aquatic environments?

• Salinity

• pH

• Temperature

• Light

Which type of plankton is responsible for a significant portion of Earth's oxygen production?

• Ultraplankton

• Zooplankton

• Phytoplankton

• Bacterioplankton

What role do decomposers play in aquatic ecosystems?

• Cycling matter back to usable forms

• Providing shelter

• Consumers

• Primary producers

Which of the following is a mobile aquatic organism?

• Nekton

• Benthos

• Plankton

• Decomposers