Perch Dissection |
1.) The general body shape of the perch is sort of oval or circular shaped. This shape shows adaptation for life in water because the streamline body helps for swimming fast and easy in water.
2.) One function of the gill rakers could be that they separate the gill arches from each other and create spaces between each of them.
3.) Pectoral & Pelvic Fins- these are used for propelling themselves through the water
Dorsal Fin- this is used for balance
Caudal Fin- this is used for steering through the water
4.) The scales of the perch are hard and smooth, they face away from the head, or toward the tail end. This is an advantage because the scales help them glide through the water because of how they are facing, and they provide good protection.
5.) The perch has two nostrils, they are different from ours because they have one on each side of the fish.
6.) Characteristics that I observe in the gills are that there are very many tiny, thin filaments that continue to branch out. This makes for a larger surface area, which allows oxygen to rapidly diffuse into the blood.
7.) The lateral line is a line the runs along the side of the fish, it is the spinal cord.
Critical Thinking:
1. Endoskeletons are advantages for perches because they allow much more movement, easier mobility, protection for the organs, and breathable skin. They also dont restrict growth of the animal and they dont require very much energy to shed. If the fish were to have an exoskeleton, it would be harder to control it's temperature, and it is also a bigger deal to get hurt because the organs could be crushed.
2. The guppy produces less eggs because it has to hold them inside and then give life birth, while the perch leaves large amounts of eggs on exposed rocks. However, the guppy has a higher survival rate because the young are born live, which helps then to survive. The perch leaves their young on rocks, which makes them vulnerable to predators.
3. The function of the swim bladder is to regulate the fish's position in the water. When the perch fills the sim bladder, it is able to rise in the water. When the gas level goes down, the fish floats.
2.) One function of the gill rakers could be that they separate the gill arches from each other and create spaces between each of them.
3.) Pectoral & Pelvic Fins- these are used for propelling themselves through the water
Dorsal Fin- this is used for balance
Caudal Fin- this is used for steering through the water
4.) The scales of the perch are hard and smooth, they face away from the head, or toward the tail end. This is an advantage because the scales help them glide through the water because of how they are facing, and they provide good protection.
5.) The perch has two nostrils, they are different from ours because they have one on each side of the fish.
6.) Characteristics that I observe in the gills are that there are very many tiny, thin filaments that continue to branch out. This makes for a larger surface area, which allows oxygen to rapidly diffuse into the blood.
7.) The lateral line is a line the runs along the side of the fish, it is the spinal cord.
Critical Thinking:
1. Endoskeletons are advantages for perches because they allow much more movement, easier mobility, protection for the organs, and breathable skin. They also dont restrict growth of the animal and they dont require very much energy to shed. If the fish were to have an exoskeleton, it would be harder to control it's temperature, and it is also a bigger deal to get hurt because the organs could be crushed.
2. The guppy produces less eggs because it has to hold them inside and then give life birth, while the perch leaves large amounts of eggs on exposed rocks. However, the guppy has a higher survival rate because the young are born live, which helps then to survive. The perch leaves their young on rocks, which makes them vulnerable to predators.
3. The function of the swim bladder is to regulate the fish's position in the water. When the perch fills the sim bladder, it is able to rise in the water. When the gas level goes down, the fish floats.