Freshwater Ecosystems and Wetlands

The video explores freshwater ecosystems, focusing on streams, rivers, ponds, lakes, and wetlands. It explains the characteristics of each, such as salinity, water movement, and life forms. Streams and rivers are dynamic, with tributaries and diverse life. Ponds and lakes have distinct zones and less water movement. Wetlands are categorized into marshes and swamps, each with unique vegetation. The video concludes with a recap of these ecosystems.

What is a defining characteristic of freshwater ecosystems?

• Low salinity

• Connection to the ocean

• Presence of coral reefs

• High salinity

What is a tributary?

• A stream that joins a larger stream

• A large river

• A spring

• A type of fish

Which of the following is an abiotic factor in streams and rivers?

• Fish species

• Water movement speed

• Algae presence

• Plant types

What is the source of water for streams and rivers?

• Ocean tides

• Melting ice or snow

• Underground lakes

• Rainfall only

What distinguishes a pond from a lake?

• Lakes are connected to the ocean

• Ponds are always smaller

• Lakes have more fish

• Ponds have a defined scientific size

Which zone in a lake is found near the shore?

• Surface zone

• Deep water zone

• Open water zone

• Littoral zone

What is a characteristic of wetlands?

• No plant life

• Always dry

• High salinity

• Soil with high moisture

What type of wetland is characterized by the growth of grasses?

• Bog

• Marsh

• Fen

• Swamp

Which type of wetland ecosystem includes trees and vines?

• Bog

• Swamp

• Fen

• Marsh