Annelid worms have bilateral symmetry and segmented bodies made of repeating parts. There are three main classes: earthworms, bristle worms, and leeches. They obtain food through scavenging, predation, or parasitism and can reproduce both sexually and asexually. Annelids live in saltwater, freshwater, or on land. They move via muscle systems and bristles, and have circulatory and nervous systems.

1. Annelid Worms
OBJECTIVE:
You will be able to identify the types of
Annelid Worms.

3. Annelid’s Body symmetry
1. Bilateral symmetry

4. Identifying feature of Annelids
2. They are called segmented worms
because they have segments, which
are almost identical repeating body
parts. 2. Gets Food (energy)

5. 3. There are 3 classes:
a. earthworms
b. bristle worms
c. leeches

6. 4. How do Annelids get energy
(food)?
They get food by scavenging (earthworms and
leeches), being predators (leeches and
bristleworms), or parasites (leeches).

7. 5. How do Annelids reproduce?
1. They contain both gametes (sperm
and egg)
2. Sexual – exchange sperm
3. Asexual – use own sperm to fertilize
eggs

8. 6. Where do Annelids live?
Live in saltwater (bristle worms),
freshwater (leeches), and land
(earthworms).

9. 7. How do Annelids move?
1. Muscle system
2. Earthworms have bristles on their body
to help them move.

10. 8. Cellular organization
More complexity – cells, tissue,
organs and organ systems:
have a closed circulatory system and
brain (ganglia)

11. Cool Facts:
• Get oxygen through skin
• Leeches are used in hospitals
* Earthworms are considered
“underground farmers”. They
eat dirt and then release castings(waste)
that is very fertile.

12. 5 Question Quiz!
1. Name the 3 types of annelid worms.
2. What kind of symmetry do Annelids
have?
3. Where do they live?
4. What does “Annelid mean”?
5. What are bristles?

13. “Annelids” – segmented
worms