Ascaris

Digestive system of planarian is incomplete with a single opening for ingestion as well as egestion. Digestive system of Ascaris is complete with mouth at one end and anus at the other. Digestive system of planarian resembles that of a cnidarian because both are blind, bag like with ...

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Compare the digestive systems of planarian to that of Ascaris, and how does a planarian's digestive system resemble a cnidarian(jellyfish)?

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... copies of the chromosome if i remember correctly. Thus it makes them easy to observe the chromosomes. 2n=8 is not very small... Heck, there is an Ascaris with 2n=2

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Ascaris is a parasitic roundworm. Also, there are pinworms, hookworms, trichina and filarial worms.

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... makes for an engrossing read. According to Zimmer, most people on Earth carry parasites. “Over 1.4 billion people carry the snakelike roundworm Ascaris lumbricoides in their intestines; almost 1.3 billion carry blood-sucking hookworms; 1 billion have whipmorm,” writes Zimmer. At least two million ...

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