ipl-logo

Flatworm Research Paper

349 Words2 Pages

Writing assignment #3

Phylum Platyhelminthes, known as flatworms, which also include the Planarian. Animals within this phylum are the first organisms to evolve by having bilateral symmetry, meaning that their body is equally divided into left and right halves. Also by becoming triploblastic organisms, having three different tissue layers, the endoderm (inner layer), ectoderm (outer layer) and mesoderm (third layer) these structures will be the base for the adult body. They lack a body cavity and therefore, they do not go through embryonic development. The presence of a head (cephalization) is also an evolutionary advancement in this phylum. They ingest food and expel waste through the same mouth opening. Some flatworms like the beef tapeworm Taenia paginate are parasitic to humans. …show more content…

These animals live in diverse environments, aquatic and terrestrial. They also have bilateral symmetry and their body is not divided into segments. These organisms are triploblastic (tissue layers) and are pseudocoelomates, and their body cavity is a pseudocoel (fluid filled). Because they are pseudocoelomates, they do not go through embryonic development. Major evolutionary advancement, the digestive system, at one end of the body is the mouth and at the other extreme is the anus. Nematodes have sexual reproduction, with dioecious sexes. Roundworms are known to be free-living but also parasitic to plants and animals. Trichenella one of the most parasitic nematodans, live inside pigs’ intestine creating cysts that are later consumed by

Show More
Related

Stimulus Variegatus Lab Report

1306 Words | 6 Pages

The circulatory system of the blackworm is closed containing arteries, veins and a muscular pumping dorsal vessel which contracts enabling blood to be moved from the posterior end, where gas exchange occurs, to the anterior region, the head of the

Read More

Host Manipulation Chapter 5

615 Words | 3 Pages

The last example is T. gondii is a parasite that is only able to sexually reproduce in cats. When the parasite reproduces, it creates oocysts, which are removed from the cat when it passes feces. Animals, such as rodents and birds, will in time eat the oocysts and become infected. The parasite can also infect humans when we eat undercooked meat and unclean vegetables or do work with cat litter. This is why pregnant women should not empty a cat litter box.

Read More

Essay On Tobacco Hornworm

444 Words | 2 Pages

It is green, with seven white stripes. The Tobacco Hornworm has a red horn on its behind. It has multiple small orange spots on its side, known are spiracles, which is what the insect breathes out of. During what is known as the Tobacco Hornworms “wandering phase” the presence of the insect’s aorta, or its heart, is located at the back of the insect and is seen pumping blood. Why is this organism studied?

Read More

Unhooking The Hookworm Analysis

633 Words | 3 Pages

Unhooking the Hookworm was a film released by the International Health Division of the Rockefeller foundation in the hopes of reducing the burden of Hookworm disease in the United States and abroad. It is a silent film about 10 minutes long, with intermittent slides containing english text. The goal of these slides is to explain how to recognize, prevent and treat hookworm disease. It follows the story of a young boy in the American South who runs barefooted around his outhouse and picks up hookworm. He is brought to a doctor by his father, where the doctor gives him medicine and sends him on his way.

Read More

Fetal Pig Research Paper

966 Words | 4 Pages

The posterior end of the earthworm is its tail while the hind legs are considered a part of the posterior end of the frog and fetal pig. - The purpose of pining these specific part of the organism to the dissecting tray is to allow the organism’s body to stay in place during the process of dissection. It also provides a clearer view when observing the organism internal

Read More

Comparing Pill Bags And Sow Bodies

225 Words | 1 Pages

Pill bugs and sow bugs are similar names that been give for land isopod. They are crustaceans in the order of Isopoda that are usually found in both terrestrial and aquatic, even though many isopods are found mainly in aquatic, only pill bug and sow bug are found exclusive in the land. Pill and sow bugs are been classify as arthropod phylum of Arthropoda. The body of a pill or sow bug consists of three main parts which are head, thorax and abdomen. The head contains two antennae and mouth parts.

Read More

Planarian Worm Lab

557 Words | 3 Pages

For this experiment, we studied how planarian worms would grow after being segmented. To begin this experiment, we filled up petri dishes half-way with spring water, this is so the planarian worms would not dehydrate and die during the two weeks we were observing them. Next, the planarian worm was picked up from its container with a pipette and then placed in a separate petri dish with some water. This took some time and I ended up having to use a pick to get the planarian worm off the inside walls of the pipette. Once the worm was in the petri dish, a razor was used to cut the worm in half, creating a “head” and “tail” segment of the worm.

Read More

Earthworm Lab Report

1176 Words | 5 Pages

The intestine traveled from the gizzard throughout the rest of the earthworm towards the anus. There was also a black substance inside the intestine which was dirt that the worm had eaten. Then near the pharynx was a bunch of yellow lobes which were the seminal vesicles, and there were two tiny balls which were the female receptacles. Underneath the yellow lobes, the seminal vesicles, was a dark spot which were rings called the aortic arches. The dorsal blood vessel could also be seen starting by the aortic arches and running throughout the rest of the body.

Read More

What Is The Main Message Of Your Inner Fish The Genetic Blueprint Of Human Life

1147 Words | 5 Pages

These three “germ layers” developed the same organs in all animal species. Basically, scientists found that all animals begin as a tube with the front and back ends becoming the mouth and anus and the tube itself becoming the digestive system. Those three germ layers are contained within the tube, and they develop the organs. The connections are limitless. Animals all contain the same genes, even humans and fruit flies with the Hox gene; alike genes are even seen as far back as sea anemones who not only have a head and tail end like humans, but carry the same genes for head and and tail development as humans do.

Read More

Giant Roundworm Research Paper

610 Words | 3 Pages

Ascaris lumbricoides, or also known as the "giant roundworm" is a very common intestinal parasitic in humans. Adults worms and larvaes usually live in the small intestine and they are able to cause bowel disease. This "giant roundworm" lives in the intestine and their egg travel through feces of humans who are infected. The average size of adulthood is about 15-35 centimeters in length.

Read More

Research Paper On Fleabass

371 Words | 2 Pages

Christmas is a wonderful time of year. It is when we all show appreciation for each other by giving gifts. I myself would like some gifts from you. After all, there are things I do not have that I want. So, I present to you the present I want for Christmas.

Read More

Peppered Moth Lab Report

168 Words | 1 Pages

Observation 6, explains that survival allows reproduction. The lab, Peppered Moth Activity, had two different types of moths; dark moths and light moths, and two different types of forests; light and dark. The dark forest is a great place for the darker moths to survive in because it helps them to camouflage and that gives them a great opportunity to reproduce their offsprings. While the lighter moths are being eaten,their population started disappearing. The dark moth parents are able genetically pass inheritable traits to their offspring, so they can also have an advantage to survive so they can also reproduce.

Read More

Guinea Worm Research Paper

94 Words | 1 Pages

The guinea worm is the largest of the parasites that can affect humans. The adult female can carry around 3 million eggs and can get up to 600-800 mm in length, as well as 2 mm in diameter. It can cause the parasitic infection, dracunculiasis, which is most commonly known as Guinea worm disease. The parasite moves through the subcutaneous tissues of the infected victim and up to the surface of the skin. About a year after initial infection, the guinea worm produces a blister on the skin, typically the feet, and then

Read More

Heartworm Research Paper

942 Words | 4 Pages

Heartworm is a potentially fatal parasite in dogs that is contracted through mosquito bites. Since heartworm has been reported in all 50 states, it 's prevalent no matter where you live. Essentially, if there are mosquitoes, there is the risk of heartworm, and a dog can take months to show noticeable signs of heartworm in the first place. Learn how to tell if your dog has heartworm as soon as you can, so you can best protect your dog in the future. A dog can only get heartworm through an infected mosquito, and it can take almost a year for the larvae in the mosquito bite to mature into full-grown worms, which embed themselves in the lungs, heart, and blood vessels of the dog.

Read More

Essay On Centipedes

1678 Words | 7 Pages

they have elongated and usually flattened animals with a large number of similar body segments. Centipedes have legs that have four segments of which the terminal one may be further sub segmented and all the legs are the same, except the first pair which are transformed to poison claws and the last which elongated and closed up and backwards as tail feelers. The last legs have a terminal attaching claws and may be variously modified into leaf like rattles organs with spines to grab and hold prey. Centipedes have spiracles pores that are found on top of each leg.

Read More

More about Flatworm Research Paper

Related Topics

Open Document