What are the key evolutionary advancements of the Phylum Platyheminthes?
Organs and Bilateral symmetary
What type of colem does the Phylum Platyheminathes have?
What is the body describtion of the Phylum Platyheminthes?
Flat, no true segmenation
What systems are involved with the Phylum Platyheminthes?
Nervous, and Excretory (osmoregulatory), and digestive
What type of nutitional mode does the Phylum Platyheminthes have?
Free-living and most are parasitic
What is it called when a organism has all three germ layers?
What type of body wall does the Platyheminthes have?
Non-cellular matix and more protections
gland cells in epidermis
What are the three muscles that Platyheminthes have?
Longitude, Circluar, and Obilique
Is the digestive system in Platyheminthes incomplete or complete?
What organs are in the digestive system?
Pharynx, mouth/anus, intestine
What is involved in the Excretion and Osmoregulation system?
It is the water balanced and waste regulatory
What organs are involved in the Excretion System?
flame cells, and weir
What is a flame cell?
Cell that filters water and balances salts and sugars
What is a network of protonephridia that join and form a series of tubes that connect with holes that allow for the emptying of wastes.
What is the structure in the nervous system that acts as a brain for the Platyheminthes?
Does the Platyheminthes reproduce sexually or asexually?
How does the Platyheminthes breathe?
During respiration they diffuse through the skin
What are the classes of phylum Platyheminthes?
What is the Class Turbellaria consist of?
What does the Plathynian (class turbellaria) have on their epidermis?
Ciliated, with gland cells for muscous secretion
How does the Class Turbellia (plathynians) move?
The three different muscles,(longitude, Circluar, and Oblique)
epidermis:Gland cells and Ciliated epidermal cells
What happens when the cicular muscles contact in the class turbellia (plathynians)
Skinner and Longer
What happens when the longitudal muscles contract in Class turbellia (plathynains)
Shorter and Fatter
What happens when the oblique muscles contract in Class Turbellia (plathynains)
What is the nutritional mode of the Class Turbellia (plathynians)
How does the Class Turbellia aquire food?
The planarians use their auricles as a sense of smell and taste to track their food. Once the plathynain found it they screte mucous so they can trap the food because the tiny insects they eat are faster then they are. Then the mouth opens and the pharynex comes out to suck the food up. Once it is sucked up through the pharynex it goes into the intestine and the y shaped structure adds additional surface area
What are the two sensory organs that the Class Turbellia have?
What does the Ocelli do?
What does the auricles do?
How do the Class Turbellia asxually reproduce?
Fragmentation or fission
What is the process of Class Turbellia sexual reproduction?
The plathynains are hermaphoditic and both parts work all the time. The plathynains use this technique called fencing and whoever loses becomes the female. After the winner copulates into the genial pore of the female it fertilizies the female the lays the endolecithal eggs into the cocoons
What is the Class Flukes are involved with?
What is the nutritional mode of Class Trematoda (Fluke)
What is a basic describtion of Class Trematoda (Fluke)
Thick teguments and one or more suckers
Lack External Cilia
Organs for Adhesion
How is a thicker tegument an advantage for flukes?
Because they have to survive inside the host which has a resistant to it, the host DOESNT want it in there
How does the Class Trematoda (Fluke) acquire food?