Earthworm Biology and Ecology

The video explores the importance of worms, focusing on earthworms. It begins with an introduction to different types of worms, highlighting their common characteristics. The anatomy and physiology of earthworms are discussed, including their segmented bodies, digestive and circulatory systems, and sensory capabilities. The video explains how earthworms live in burrows to maintain moisture and contribute to soil health by aerating the soil and releasing nutrients. The role of earthworms in composting is also covered, emphasizing their value in creating nutrient-rich soil. The video concludes with a summary of the key points discussed.

Which of the following is NOT a group of worms?

• Spiral worms

• Segmented worms

• Flatworms

• Roundworms

What feature helps earthworms move through the soil?

• Wings

• Legs

• Hair-like bristles

• Fins

What type of body structure do earthworms have?

• Flat

• Round

• Spiral

• Segmented

What is the primary function of the earthworm's brain?

• To help them fly

• To sense and respond to environmental changes

• To digest food

• To produce light

Which system in earthworms is responsible for circulating blood?

• Closed circulatory system

• Respiratory system

• Open circulatory system

• Nervous system

Where are earthworms most commonly found?

• In trees

• In the sky

• In underground burrows

• On the surface of the ocean

How do earthworms contribute to soil health?

• By eating plants

• By releasing nutrients into the soil

• By blocking water flow

• By removing air from the soil

What is the main reason earthworms are used in composting?

• To produce light

• To break down food scraps into nutrient-rich soil

• To scare away pests

• To dry out the soil

What is the role of earthworm burrows in the soil?

• To block sunlight

• To trap animals

• To store food

• To provide spaces for air and water

What do earthworms primarily feed on?

• Insects

• Organic matter in the soil

• Leaves

• Rocks