Phyla Dissection
Sponge Dissection Lanb
The sponge has a skeleton composed of calcium carbonate, silicon, and spongin. They are multicellular organisms, heterotrophic, have no cell walls, and have only a few specialized cells. The movement of water provides the sponge a simple way to feed, respirate, circulate, and excrete. They reproduce sexually and asexually. Sponge are the ideal habitats for marine animals because they are able to thrive in most environments and 99% of sponges live in marine water. In addition, they are important in nutrient cycles. They also lower the nitrogen levels in their environment when they filter,. The lesser levels of nitrogen are beneficial for other organisms to live in and recycle food food for other organisms.
The sponge has a skeleton composed of calcium carbonate, silicon, and spongin. They are multicellular organisms, heterotrophic, have no cell walls, and have only a few specialized cells. The movement of water provides the sponge a simple way to feed, respirate, circulate, and excrete. They reproduce sexually and asexually. Sponge are the ideal habitats for marine animals because they are able to thrive in most environments and 99% of sponges live in marine water. In addition, they are important in nutrient cycles. They also lower the nitrogen levels in their environment when they filter,. The lesser levels of nitrogen are beneficial for other organisms to live in and recycle food food for other organisms.
Jellyfish Dissection Lab
Cnidarians are a few cells thick with specialized tissues. Poriferas have no cell walls and contain a few specialized cells. Jellyfish are bell shaped. Jellyfish, hydra, and sea anemone are part of the phylum Cnidaria. The two basic body plans in these phylum are known as a medusa form and a polyp form. The medusa is the sexually reproducing, motile form commonly know as the jellyfish. The polyp is usually asexual and reproduces by budding. Hydras and sea anemones are polyps. They are the simplest animals to have body symmetry and specialized tissues.
Jellyfish have two true tissue layers, an outer epidermis and an inner gastrodermis. A noncellular matrix called the mesoglea lies between these layers and makes up most of the jellyfish. It serves as a storage site for nutrients and a site for gas exchange. The epidermis is made up of only one layer of cells. The gastrodermis lines an incomplete digestive system called the gastrovascular cavity. Food enters through the mouth of this digestive system, and waste exits through the mouth as well. The gastrodermis is also only one layer thick, but it is made of darker cells. Respiration, circulation, and excretion is through diffusion.
Jellyfish have two true tissue layers, an outer epidermis and an inner gastrodermis. A noncellular matrix called the mesoglea lies between these layers and makes up most of the jellyfish. It serves as a storage site for nutrients and a site for gas exchange. The epidermis is made up of only one layer of cells. The gastrodermis lines an incomplete digestive system called the gastrovascular cavity. Food enters through the mouth of this digestive system, and waste exits through the mouth as well. The gastrodermis is also only one layer thick, but it is made of darker cells. Respiration, circulation, and excretion is through diffusion.
Squid Dissection Lab
The squid is a mollusk and mollusks are usually soft bodied animals. Squids are cephalopods. Mollusks usually have four body parts: the foot, mantle, shell and visceral mass. A cephalopod is soft bodied and is a head attached to a foot divided into arms and tentacles. Squids use the siphon to feed, respirate, circulate, excrete, and breed. They also have a close circulatory system. Squids have specialized cells called chromatophores which allow the squids to change colors quickly. Squids also use jet propulsions to move around. They reproduce sexually by external fertilization.
Earthworm Dissection Lab
The earthworm belongs to a phyla, Nematoda. They are worms with a segmented body and have a true coelom lined with tissues derived from mesoderm. They have a digestive tract that passes from mouth to anus. In the earthworm, the pharynx pumps food and soil into the esophagus. Then the food moves through the crop and through the gizzard. The food is then absorbed further down into the intestine. They have a closed circulatory system with two blood vessels running from head to tail. Earthworms respirate through their moist skin. They excrete through their anus. They have a nervous system with a brain and several nerve cords. They reproduce sexually and are hermaphrodites.
The earthworm belongs to a phyla, Nematoda. They are worms with a segmented body and have a true coelom lined with tissues derived from mesoderm. They have a digestive tract that passes from mouth to anus. In the earthworm, the pharynx pumps food and soil into the esophagus. Then the food moves through the crop and through the gizzard. The food is then absorbed further down into the intestine. They have a closed circulatory system with two blood vessels running from head to tail. Earthworms respirate through their moist skin. They excrete through their anus. They have a nervous system with a brain and several nerve cords. They reproduce sexually and are hermaphrodites.
Grasshopper Dissection Lab
The grasshopper is segmented organism. It's divided into three sections: head, thorax, and abdomen. It's six legs are attached to its thorax. Grasshopper have compound eyes and have chemical receptors on their mouthparts for taste and smell. Grasshoppers have a pair of mandibles that is an adaption for feeding. Grasshopper have two legs adapted for jumping and two pairs of wings: a soft one and harder, protective one.
The grasshopper is segmented organism. It's divided into three sections: head, thorax, and abdomen. It's six legs are attached to its thorax. Grasshopper have compound eyes and have chemical receptors on their mouthparts for taste and smell. Grasshoppers have a pair of mandibles that is an adaption for feeding. Grasshopper have two legs adapted for jumping and two pairs of wings: a soft one and harder, protective one.
Perch Dissection Lab
The perch is part of the phyla Chordata. Perch is called a "bony fish". The perch has 4 different types of fins: pectoral, pelvic, dorsal, and caudal fins. The perch has all the basic organs: a heart and intestines as well as reproductive organs. Instead of lungs, the perch has gills. The perch does have eyes and nostrils. The nostrils of a perch look like tiny holes on the surface perch's head. The perch's body shows many adaptations for life underwater, like the swim bladder or its gills. Gills are a very efficient respiratory organ because of their ability to filter air out of water as it passes through them. The purpose of the swim bladder is allow the fish to control it's own density in order to enable it to rise up or sink down in water. The scales of the perch face away from the head of the perch. Because the scales all face the same direction, the fish can move from side to side without impediment. Also, the scales form a sort of shield layer to protect the perch. The lateral line of a perch is long line that stretches form the anterior to posterior end of the fish. Its function is to allow the perch to sense movement in the surrounding water.
The perch is part of the phyla Chordata. Perch is called a "bony fish". The perch has 4 different types of fins: pectoral, pelvic, dorsal, and caudal fins. The perch has all the basic organs: a heart and intestines as well as reproductive organs. Instead of lungs, the perch has gills. The perch does have eyes and nostrils. The nostrils of a perch look like tiny holes on the surface perch's head. The perch's body shows many adaptations for life underwater, like the swim bladder or its gills. Gills are a very efficient respiratory organ because of their ability to filter air out of water as it passes through them. The purpose of the swim bladder is allow the fish to control it's own density in order to enable it to rise up or sink down in water. The scales of the perch face away from the head of the perch. Because the scales all face the same direction, the fish can move from side to side without impediment. Also, the scales form a sort of shield layer to protect the perch. The lateral line of a perch is long line that stretches form the anterior to posterior end of the fish. Its function is to allow the perch to sense movement in the surrounding water.
Frog Dissection Lab
The frog is part of the phyla chordata. It is a vertebrae that lives both in water and land. The larvae of the frog are fishlike and live in the water using gills. The adults are terrestrial and respire using lungs and skin. Its moist skin contains mucous glandes. They don't have scaled or claws. Tadpoles are usually filter feeders or herbivores that feed on algae, eating nearly constantly. Their intestines are long and cold which helps break down plant material filled with food. Frogs are almost entirely carnivorous, eating nearly anything they can catch and swallow. They have long, sticky tongues that are specialized to catch insect. Food goes from the mouth into the esophagus into the stomach, and continues in the small intestine. Then it travels to the large intestine and exits through the cloaca. Through the cloaca, wastes, urine, and eggs or sperm exit the body. Their circulatory system forms a double loop. They reproduce sexually with internal fertilization. They have a well developed nervous and sensory system. Their legs are developed to help then make lengthy jumps.
The frog is part of the phyla chordata. It is a vertebrae that lives both in water and land. The larvae of the frog are fishlike and live in the water using gills. The adults are terrestrial and respire using lungs and skin. Its moist skin contains mucous glandes. They don't have scaled or claws. Tadpoles are usually filter feeders or herbivores that feed on algae, eating nearly constantly. Their intestines are long and cold which helps break down plant material filled with food. Frogs are almost entirely carnivorous, eating nearly anything they can catch and swallow. They have long, sticky tongues that are specialized to catch insect. Food goes from the mouth into the esophagus into the stomach, and continues in the small intestine. Then it travels to the large intestine and exits through the cloaca. Through the cloaca, wastes, urine, and eggs or sperm exit the body. Their circulatory system forms a double loop. They reproduce sexually with internal fertilization. They have a well developed nervous and sensory system. Their legs are developed to help then make lengthy jumps.