roundworms

27 05, 2017

What are roundworms? Nematodes, evolution, and biology

By |2018-04-16T09:05:06-07:00May 27th, 2017|Biology|Comments Off on What are roundworms? Nematodes, evolution, and biology

Nematodes, also called roundworms, in a jar Evolution of roundworms Roundworms, or nematodes, probably evolved from the earlier flatworms about 548 million years ago. Like all other living things at [...]

26 05, 2017

What does a stomach do? – Digestion and Evolution

By |2017-05-26T19:21:38-07:00May 26th, 2017|Biology|Comments Off on What does a stomach do? – Digestion and Evolution

Fish Stomach The first multi-cellular animals like hydras had no stomachs, or you could say they were all stomach, because they were shaped like a bag. Roundworms, a little later, [...]

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