Overview
Annelida, or segmented worms, are a fascinating group of invertebrates known for their segmented bodies and coelom. This phylum includes familiar organisms like earthworms and leeches, which play vital roles in ecosystems. Their body structure allows for flexibility and specialization, making them e...
Key Terms
Example: Earthworms exhibit segmentation, allowing for coordinated movement.
Example: The coelom in annelids helps in organ development.
Example: Metamerism is a key feature of annelids.
Example: Nephridia function similarly to kidneys in vertebrates.
Example: Some annelids can reproduce asexually through fragmentation.
Example: Many annelids reproduce sexually, producing eggs and sperm.
Related Topics
Mollusca
Mollusca is a diverse phylum that includes snails, clams, and octopuses, known for their soft bodies and often hard shells.
intermediateEchinodermata
Echinodermata includes marine animals like starfish and sea urchins, characterized by their radial symmetry and water vascular system.
intermediateArthropoda
Arthropoda is the largest phylum, including insects, arachnids, and crustaceans, known for their exoskeletons and jointed limbs.
advancedKey Concepts
segmentationcoelommetamerismnephridia