Question

Taenia shows pseudometamerism, that is

• A. Segmentation where youngest segment is posterior most
• B. Segmentation where youngest segment is anterior most
• C. Segmentation where youngest segment is at the middle
• D. None of the above

Answer 1

The correct option is B Segmentation where youngest segment is anterior most

Pseudometamerism occurs in the clade Cestoda where the metameric arrangement of internal organs is there without external metamerism. New segments are formed at the anterior end, just behind the scolex. Hence, the youngest segments occur at the anterior end and the old segments at the posterior end.
So, the correct answer is option B.