Question 6 (u.s points) Which of the following best describes the movement and a

Question

Question 6 (u.s points) Which of the following best describes the movement and and feeding of a planarian? Planarians glide through the water and catch food with their pharynx. Planarians swim in circles and absorb food through their skin. Planarians swim in circles and catch ood with their pharynx. Planarians glide through the water and absorb food through their skin. Save Question 7 (0.5 points) Nematodes are pseudocoelomates which means they have room for internal organs to develop but that the cavity is not completely lined with mesoderm. True False Save Question 8 (0.5 points) Humans contract trichinosis byThe signs and symptoms the infected woman on the "Monsters Inside Me" video had were infected water fever and abdominal cramps.

Explanation / Answer

Ans 6 : planarians glide through the water and catch food with their pharynx.

The body is covered by slime or mucous. The animal glides over solid submerged structures by cilia, mucilage, and muscular contractions. It can also clamp itself to the substratum by an adhesive zone present ventrally.

Ans : 7 .True

Ans 8 : eating raw pork

Symptoms are : muscle stiffness pain , diarrhoea, fever, vomiting and death.

Trichinella spiralis is an intestinal endoparasite of humans which form cysts inside muscle. Worm is small ,male 1.5 mm long and female 3.0 mm long .It also occurs in pig and other domesticated animals. In humans , the disease trichinosis is characterised by abdominal and muscular pains, nausea , vomiting and diarrhoea.The disease is contracted by eating infected meat and pork. Pig is the most common carrier of this parasites.

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