Stream Ecosystem Concepts and Roles

Dr. Brishti Dutta presents a comprehensive discussion on stream ecosystems, covering their definition, structure, components, and functional aspects. The video explains the importance of streams in biodiversity and human services, detailing the abiotic and biotic factors involved. It also explores the interconnections within the ecosystem through food chains and webs, emphasizing the balance and diversity streams contribute to the environment.

What is the primary focus of the video tutorial?

• Ocean Ecosystem

• Desert Ecosystem

• Forest Ecosystem

• Stream Ecosystem

Which of the following best describes a stream?

• A large body of stagnant water

• A saltwater body

• A dry riverbed

• A small channel of fresh water with flowing water

What is the main source of water for streams?

• Mountain glaciers

• Desert springs

• Rainfall and groundwater

• Ocean tides

Which of the following is NOT a type of stream classification?

• Tidal

• Ephemeral

• Intermittent

• Perennial

What are abiotic factors in a stream ecosystem?

• Only animals

• Living organisms

• Non-living elements like temperature and minerals

• Only plants

Which of the following is a primary producer in a stream ecosystem?

• Fish

• Insects

• Algae

• Birds

What role do decomposers play in a stream ecosystem?

• They produce energy

• They consume primary producers

• They break down dead material

• They provide shelter

How are food chains and food webs related in a stream ecosystem?

• Food webs are a collection of food chains

• Food chains are more complex than food webs

• Food chains are isolated, while food webs are interconnected

• Food webs do not exist in stream ecosystems

What is the significance of food webs in stream ecosystems?

• They reduce biodiversity

• They increase pollution

• They have no significant role

• They help maintain ecosystem balance

Which of the following is a tertiary consumer in a stream ecosystem?

• Large fish

• Plankton

• Small fish

• Algae