Cnidarians
![Picture](/uploads/5/0/4/0/50409869/5827847.png?250)
Habitat:
Cnidarians are found exclusively in marine and aquatic environments.
Milestones:
Tissues and radial symmetry.
Anatomical Features:
Mesoglea- nonliving, jelly-like substance sandwiched between two layers of one cell thick epithelium.
Body cavity- Digestion and respiration
Some have simple eyes
Eating and Fleeting:
Feed on plankton and endosymbiotic algae mostly. They are preyed on by starfish, sea slugs, fish, and turtles.
Symmetry:
Radial Symmetry
Mobility:
Two basic body forms: swimming medusa and sessile (immobile) polyps.
Reproduction:
All cnidarian can reproduce asexually and regenerate limbs through budding. In sexual reproduction their is an alternation of generations with the medusae and polyp. Adults have gonads to release ova and sperm into the water.
Development:
Shortened development is common with the medusa and polyp. Some cnidarians are lacking either one.
Examples:
-Chrysaora fuscescens
-Physalia physalis
-Sertularia argentea
Other Information:
Cnidarians are the only type of animals with radial symmetry.
Cnidarians are found exclusively in marine and aquatic environments.
Milestones:
Tissues and radial symmetry.
Anatomical Features:
Mesoglea- nonliving, jelly-like substance sandwiched between two layers of one cell thick epithelium.
Body cavity- Digestion and respiration
Some have simple eyes
Eating and Fleeting:
Feed on plankton and endosymbiotic algae mostly. They are preyed on by starfish, sea slugs, fish, and turtles.
Symmetry:
Radial Symmetry
Mobility:
Two basic body forms: swimming medusa and sessile (immobile) polyps.
Reproduction:
All cnidarian can reproduce asexually and regenerate limbs through budding. In sexual reproduction their is an alternation of generations with the medusae and polyp. Adults have gonads to release ova and sperm into the water.
Development:
Shortened development is common with the medusa and polyp. Some cnidarians are lacking either one.
Examples:
-Chrysaora fuscescens
-Physalia physalis
-Sertularia argentea
Other Information:
Cnidarians are the only type of animals with radial symmetry.
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