Quiz on Aquatic Ecosystems

What is the primary factor that ecologists use to classify aquatic ecosystems?

• Salinity

• Temperature

• Presence of fish

• Color of the water

Which zone of the ocean is characterized by enough sunlight for photosynthesis?

• Aphotic zone

• Benthic zone

• Photic zone

• Intertidal zone

What type of lake has low nutrient levels and is usually found in cold regions?

• Hypereutrophic

• Mesotrophic

• Eutrophic

• Oligotrophic

Which of the following is NOT a characteristic of the benthic zone?

• Bacteria decompose organic matter here.

• It is the bottom layer of a body of water.

• It contains sediment and soil.

• It has high levels of light.

What is the main ethical principle emphasized in Islam regarding resource management?

• Maximizing profits

• Prohibiting wastefulness

• Exploiting resources

• Encouraging overconsumption

Which of the following aquatic bodies is classified as standing freshwater?

• Estuaries

• Lakes

• Streams

• Rivers

What is the primary consequence of introducing a non-native predator species into an aquatic ecosystem?

• Increased biodiversity

• Disruption of the food web

• Improvement of water quality

• Stabilization of the food web

Which zone of a lake is characterized by the highest levels of oxygen and light?

• Benthic zone

• Profundal zone

• Limnetic zone

• Littoral zone

What is the primary impact of human activities on aquatic ecosystems?

• Eutrophication

• Enhanced photosynthesis

• Decreased salinity

• Increased biodiversity

Which of the following best describes the aphotic zone?

• It is the upper layer of the ocean.

• It receives enough sunlight for photosynthesis.

• It is where most marine life thrives.

• It is deeper than 200 meters and lacks light.