Annelids
![Picture](/uploads/5/0/4/0/50409869/7021504_orig.png)
Habitat:
Specialize in specific ecologies usually. Some live in marine environments, while others live in moist terrestrial environments.
Milestones:
Eukaryotic, have tissues, enclosed body cavities, and bilateral symmetry.
Anatomical Features:
-No features that are different from other invertebrates, but the combination of traits is unique
-External chaetae (hair)
-Cuticles made of collagen
-Muscle fibers- controlled by more than one neuron
-Coelomata- pair of body cavities in each segment
Eating and Fleeting:
Feeding structures in mouth have little to do with the diet. Omnivores that include a wide variety of organisms in their diet. Since they are aquatic, they are preyed on by other aquatic creatures such as fish.
Symmetry:
Bilateral Symmetry
Mobility:
Most move through peristalsis, which is a process involving bodily expansion and contraction.
Reproduction:
Reproduce asexually by budding or division. Separate sexes, which release ova and sperm into the water through nephridia.
Development:
Life cycles of most are unknown. The fertilized eggs of the know reproductive cycles will develop into larvae and live as plankton. Eventually, they will sink to the bottom and metaphase into miniature adults.
Examples:
-Linneus longissimus
-Lumbricus terrestris
-Paragordius tricuspidatus
Other Information:
Worms can be independent or parasitic.
Specialize in specific ecologies usually. Some live in marine environments, while others live in moist terrestrial environments.
Milestones:
Eukaryotic, have tissues, enclosed body cavities, and bilateral symmetry.
Anatomical Features:
-No features that are different from other invertebrates, but the combination of traits is unique
-External chaetae (hair)
-Cuticles made of collagen
-Muscle fibers- controlled by more than one neuron
-Coelomata- pair of body cavities in each segment
Eating and Fleeting:
Feeding structures in mouth have little to do with the diet. Omnivores that include a wide variety of organisms in their diet. Since they are aquatic, they are preyed on by other aquatic creatures such as fish.
Symmetry:
Bilateral Symmetry
Mobility:
Most move through peristalsis, which is a process involving bodily expansion and contraction.
Reproduction:
Reproduce asexually by budding or division. Separate sexes, which release ova and sperm into the water through nephridia.
Development:
Life cycles of most are unknown. The fertilized eggs of the know reproductive cycles will develop into larvae and live as plankton. Eventually, they will sink to the bottom and metaphase into miniature adults.
Examples:
-Linneus longissimus
-Lumbricus terrestris
-Paragordius tricuspidatus
Other Information:
Worms can be independent or parasitic.
18