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Why do we have to use special techniques for the recovery of pinworm eggs? Explain
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- Why do we have to use special techniques for the recovery of pinworm eggs? What is the importance of those special techniques fro the recovery of pinworms?The dauer stage of worm development occurs: 1) when there is ample food 2) when there is excess food 3) when the strain of bacteria used to feed the worms is changed 4) when there is too little foodWhy are parasitic worm infections so difficult to treat?
- Liver Flukes Procedure View the preserved liver fluke specimens. Liver flukes are an example of a parasitic flatworm. Also, access this website to learn more about the liver fluke life cycle: http://www.cdc.gov/parasites/fasciola/biology.html 1. Where does the adult liver fluke live? 2. When the liver fluke egg hatches, what organism does it infect first? 3. Can humans become infected? View the preserved tapeworm and the slides of the tapeworm scolex (head) and proglottids (reproductive bodies). This is another example of a parasitic flatworm. Also, access this website to learn more about the tapeworm life cycle: http://www.cdc.gov/parasites/taeniasis/biology.html 1. What structures are located on the scolex to help the tapeworm attach to the host? 2. Are tapeworms hermaphrodites? 3. Name two livestock that can be infected by tapeworms. 4. If a human is infected, where does the tapeworm live?Why are the larvae of Trichinella spiralis considered more dangerous than the adults?A) what is the scientific name of the shell and its common name B) what does the shells species eats and what feeding method it uses to obtain its food (filter feeder, active predator, active herbivore, etc).
- What measures do you think could be taken into control the spread of parasitic worms?How can you ensure that any changes in behavior or appearance of the worms is due to the pollution,and not the result of handling the wormsIf the final or definitive host of a parasitic flatworm were eradicated, what would be the likely consequence?
- In the above figure, it shows the typical propagation rate of a worm. Answer the following two questions: a) why does the start phase show a slow propagation? b) why does the finish phase show a slow propagationA) what is the scientific name of the shell B) what eats and what feeding method it uses to obtain its food (filter feeder, active predator, active herbivore, etc).Select 2 types of parasitic and describe the following: defining characteristics how each organism functions, its host, and its transmission any problems or any benefits associated with these worms