Freshwater and Marine Ecosystems

The video explores freshwater ecosystems, including streams, rivers, lakes, and ponds. It discusses the movement of water, the different zones within lakes, and the plants and animals that inhabit these environments. Key features of major rivers like the Nile and Amazon are highlighted, along with the unique adaptations of flora and fauna in these ecosystems. The video concludes with a summary of the importance of freshwater ecosystems and their biodiversity.

Which of the following is NOT considered a freshwater ecosystem?

• Streams

• Rivers

• Lakes

• Oceans

What is the primary reason oceans are not considered freshwater ecosystems?

• They are too large

• They are salty

• They have too many fish

• They are not surrounded by land

What is the term used to describe the always moving water in streams and rivers?

• Lotic

• Lentic

• Static

• Dynamic

Which river is the longest in the world?

• Mississippi River

• Nile River

• Yangtze River

• Amazon River

Which zone in a lake is closest to the shore?

• Benthic zone

• Profundal zone

• Limnetic zone

• Littoral zone

What is the largest lake that covers the land?

• Lake Superior

• Lake Baikal

• Lake Victoria

• Caspian Sea

What is the primary role of plants and algae in freshwater ecosystems?

• Attracting fish

• Filtering water

• Producing food and oxygen

• Providing shelter

Which plant is known for its large plate-like leaves and is found in the Amazon River?

• Water Lily

• Duckweed

• Victoria Amazonica

• Cattail

Which freshwater animal is known for jumping out of the water during migration?

• Frog

• Shrimp

• Salmon

• Trout

Which of the following animals cannot survive long in saltwater?

• Clam

• Frog

• Salmon

• Trout