General Descriptions
These worms belong to Phylum Annelida and are known for their segmented bodies.
What are Earthworms?
These worms have segmented bodies and a closed circulatory system.
What are Annelids?
The process by which flatworms regenerate new individuals from body fragments.
What is fragmentation?
Earthworms help enrich soil by breaking down this.
What is organic matter?
The evolutionary group annelids belong to.
What is Lophotrochozoa?
These flat-bodied worms lack a circulatory system and include species like tapeworms and planarians.
What are Platyhelminthes?
A characteristic of nematodes' digestive system.
What is a one-way digestive tract?
The type of fertilization used by nematodes.
What is internal fertilization?
Nematodes that infect humans and cause anemia.
What are hookworms?
A key adaptation in platyhelminthes that ensures oxygen diffusion across all cells.
What is a flat body shape?
This phylum of worms has a tough cuticle covering and includes hookworms.
What are Nematodes?
Flatworms lack this feature, making their shape critical for diffusion.
What is a circulatory system?
A reproductive strategy in annelids involving sperm exchange between individuals.
What is cross-fertilization?
The role of flatworms in aquatic ecosystems as scavengers.
What is breaking down decaying material?
The evolutionary process by which nematodes developed separately from annelids.
What is convergent evolution?
The respiration method shared by Platyhelminthes and Annelida.
What is diffusion?
The layer nematodes molt for growth and protection.
What is a cuticle?
This flatworm has both male and female reproductive organs for sexual reproduction.
What is a hermaphrodite?
The major ecological role of soil-dwelling nematodes.
What is decomposing organic matter?
The fossil feature of early annelids that helped them burrow.
What are shell-like structures?
The environment where most nematodes can be found.
What are freshwater, soil, and parasitic environments?
The cavity filled with fluid in annelids that aids in nutrient transport.
What is the coelom
The number of hosts typically required for parasitic flatworms' life cycles.
What are two or more?
This phylum includes worms that improve soil aeration, enhance water infiltration, and contribute to nutrient cycling.
What is Annelida?
The common ancestor between platyhelminthes and annelids.
What are bristle worms?