Nematodes are parasites of humans and plants. This phylum includes Ascaris, Necator, and Trichinella. Nematodes are simple roundworms. Click through the activity below to learn how to draw a roundworm.
Outline
First, draw the outline of the roundworm. Roundworms are often found arranged in a spiral position. One end is wider than the other end. Mouth and Anus
Second, draw the mouth on the anterior end, which should be the wider end. On the thinner end lies the anus. What end is the anus on? Think of the answer, then click Show Me to see if you are correct.
The anus is located on the posterior end. Digestive Tract
Finally, connect the anus and mouth with the digestive tract. Label the digestive tract. |
 |
