Aquatic Biomes and Ecosystems

The video explores aquatic biomes, dividing them into marine and freshwater categories. It details marine zones like euphotic, bathyal, and abyssal, and discusses threats to coral reefs. Freshwater biomes, including lakes and rivers, are examined with a focus on their zones. The video concludes with a look at streams, rivers, and the dynamic distribution of biomes due to climate change.

What are the two main categories of aquatic biomes?

• Desert and terrestrial

• Freshwater and desert

• Marine and terrestrial

• Marine and freshwater

Which zone of the ocean is characterized by high levels of dissolved oxygen and phytoplankton?

• Coastal zone

• Euphotic zone

• Bathyal zone

• Abyssal zone

Which zone in the ocean is characterized by high pressure and low temperatures?

• Euphotic zone

• Bathyal zone

• Abyssal zone

• Coastal zone

What is a significant threat to coral reefs that leads to a decrease in biodiversity?

• Ocean acidification

• Overfishing

• Pollution

• Climate change

Which zone in a lake is closest to the shore and supports rooted plants?

• Profundal zone

• Littoral zone

• Limnetic zone

• Benthic zone

What defines an oligotrophic lake?

• High nutrient levels

• Low nutrient levels

• High plant life

• High turbidity

What is the primary cause of cultural eutrophication in lakes?

• Human-induced nutrient increase

• Increase in dissolved oxygen

• Natural nutrient increase

• Decrease in plant life

What type of water body is characterized by moving water?

• Lentic

• Lotic

• Estuary

• Wetland

Which zone in a river is known for its fast-moving, cold, and clear water?

• Source zone

• Floodplain zone

• Estuary zone

• Transition zone

What happens to the distribution of biomes as a result of climate change?

• It shifts dynamically

• It becomes more diverse

• It becomes less diverse

• It remains static