Roles in Ecosystems

The video tutorial explores the role of plants, bacteria, and animals in ecosystems. It explains how plants produce energy through photosynthesis, using sunlight, carbon dioxide, and water to create oxygen and energy. Plants and certain bacteria are classified as producers because they generate their own energy. In contrast, animals are consumers that must eat other organisms to obtain energy. The video also highlights the importance of decomposers, such as bacteria, in breaking down dead matter and returning nutrients to the soil, which supports plant growth.

How do plants primarily obtain their energy?

• By eating insects

• By absorbing nutrients from the soil

• Through photosynthesis

• By consuming other plants

What is a key characteristic of producers in an ecosystem?

• They produce their own energy

• They consume other organisms

• They rely on sunlight for warmth

• They decompose dead matter

Which of the following is NOT a producer?

• Algae

• Sheep

• Certain bacteria

• Plants

What role do decomposers play in an ecosystem?

• They consume living plants

• They compete with plants for nutrients

• They break down dead organisms

• They produce energy from sunlight

How do decomposers benefit plants?

• By returning nutrients to the soil

• By providing shade

• By consuming harmful insects

• By producing oxygen