Amphibians
Habitat:
After the completely aquatic larval stage, the habitat of amphibians will be terrestrial, but close to water for reproduction as these organisms are only semi-terrestrial
Reproduction:
External fertilization (eggs lack a protective membrane and shell)
Anatomical Features:
1. Air breathing (makes amphibians semi-terrestrial)
2. Adults have a three chambered heart
3. Gases are exchanged through skin
4. Coldblooded (temperature will change with the environment)
5. Closed circulatory system
6. Well-developed nervous and sensory system
Evolutionary Milestones:
Legs
Predators/Prey:
Filter-feeders or herbivores, but become carnivores in adult stage.
Predators:
Reptiles, mammals, harmful strains of fungi and bacteria, and other organisms
Symmetry:
Bilateral
Mobility:
- Some have legs while others have no legs at all. Amphibians can run, leap, swim, or other variations of these movements.
Development:
(undergo metamorphosis)
Egg, larva, young adult, adult
After the completely aquatic larval stage, the habitat of amphibians will be terrestrial, but close to water for reproduction as these organisms are only semi-terrestrial
Reproduction:
External fertilization (eggs lack a protective membrane and shell)
Anatomical Features:
1. Air breathing (makes amphibians semi-terrestrial)
2. Adults have a three chambered heart
3. Gases are exchanged through skin
4. Coldblooded (temperature will change with the environment)
5. Closed circulatory system
6. Well-developed nervous and sensory system
Evolutionary Milestones:
Legs
Predators/Prey:
Filter-feeders or herbivores, but become carnivores in adult stage.
Predators:
Reptiles, mammals, harmful strains of fungi and bacteria, and other organisms
Symmetry:
Bilateral
Mobility:
- Some have legs while others have no legs at all. Amphibians can run, leap, swim, or other variations of these movements.
Development:
(undergo metamorphosis)
Egg, larva, young adult, adult