PERCH DISSECTION
The perch, being a fish, has a body plan to help it adapt to its surroundings in the water. It has a thin and long body with fins in several places to aid it to swim. It has gills to help it "breathe", and gill rakers protect the gills from and debris that could get stuck in the gills and damage the perch's body. Its several fins help the fish manuever its way around the water. Its scales face towards the claudal fin, or its tail, helping the fish glide in the water. The perch has developed nostrils, for smell, and a lateral line that is like a nervous system to help it sense its surroundings. It has a develpoed skeleton, and a complete digestive system, nervous system, repiratory system, and circulatory system. It has a complex body plan, but it all helps the perch survive.
Ecology of Fishes, phylum Chordata, class Actinopterygii: Fishes live in either freshwater or saltwater environments, because their kidneys can only handle so much. Some species are special snowflakes, and they can move from freshwater to saltwater and back to freshwater, such as sturgeon, salmon, and lampreys.
Subgroups of Chordates: There are two types of chordates; vertebrates and nonvertebrates. The invertebrates split off into two other groups, the tunicates and lancelets, which are soft bodied marine organisms. The vertebrates split off into other groups based on ancestral evolution- such as amphibians, reptiles, birds, and mammals.
The perch, being a fish, has a body plan to help it adapt to its surroundings in the water. It has a thin and long body with fins in several places to aid it to swim. It has gills to help it "breathe", and gill rakers protect the gills from and debris that could get stuck in the gills and damage the perch's body. Its several fins help the fish manuever its way around the water. Its scales face towards the claudal fin, or its tail, helping the fish glide in the water. The perch has developed nostrils, for smell, and a lateral line that is like a nervous system to help it sense its surroundings. It has a develpoed skeleton, and a complete digestive system, nervous system, repiratory system, and circulatory system. It has a complex body plan, but it all helps the perch survive.
Ecology of Fishes, phylum Chordata, class Actinopterygii: Fishes live in either freshwater or saltwater environments, because their kidneys can only handle so much. Some species are special snowflakes, and they can move from freshwater to saltwater and back to freshwater, such as sturgeon, salmon, and lampreys.
Subgroups of Chordates: There are two types of chordates; vertebrates and nonvertebrates. The invertebrates split off into two other groups, the tunicates and lancelets, which are soft bodied marine organisms. The vertebrates split off into other groups based on ancestral evolution- such as amphibians, reptiles, birds, and mammals.