Worms

Worms are invertebrates that belong to the animal phylum Annelida. They are known for their long, slender, and tube-like bodies. There are many different types of worms, but the most common ones are earthworms, roundworms, and leeches.

Earthworms

Earthworms are perhaps the most well-known type of worm. They play a vital role in the ecosystem by aerating the soil and decomposing organic matter. This makes the soil healthier for plants to grow.

Roundworms

Roundworms, also known as nematodes, are found in diverse environments including freshwater, marine, and terrestrial habitats. Some roundworms are parasitic and can cause diseases in plants, animals, and humans.

Leeches

Leeches are often found in freshwater environments and are well-known for their blood-feeding habits. They have been used in medical settings for bloodletting and are also being studied for their potential medical applications.

Study Guide

Characteristics of Worms

• Long, slender, tube-like bodies
• Invertebrates
• Belong to the phylum Annelida

Types of Worms

• Earthworms
• Roundworms (nematodes)
• Leeches

Roles of Worms in the Ecosystem

• Aerating the soil
• Decomposing organic matter
• Improving soil health for plant growth

Roundworms and Parasitism

• Diverse habitats
• Some are parasitic and can cause diseases

Leeches and Medical Applications

• Found in freshwater environments
• Well-known for blood-feeding habits
• Used in medical settings for bloodletting
• Studied for potential medical applications