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WJEC BY2 2.6 Adaptations for parasitism

Parasites are organisms that live on or in another organism, called the host, and obtain nourishment at the
expense of the host.

The cestode (tapeworm) Taenia solium (pork tapeworm) is the main cause of human cysticercosis.

Life cycle of T. solium with resulting cysticercosis…

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Have a means of attachment to the host
Protect itself against the immune responses of the host
Develop only those organs that are essential for survival ­ no need for digestive system as is already
surrounded by digested food
Produce many eggs
Have an intermediate host
Have resistant stages to…


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