Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYStructural Organisation in Animals5 Marks
Question
Using appropriate examples, differentiate between false and true body segmentation.
✓
Answer
DIFFERENCES BETWEEN TRUE AND PSEUDO (false) METAMERISM
True metamerism commonly occurs in the arthropods, chordates, and the annelids. While Pseudo-metamerism occurs in the tapeworms etc.
In pseudo-metamerism, segmentation of the ectoderm is the base of metamerism in the complete body. While the segmentation of the mesoderm is the base reason of the segmentation in the True metamerism.
In the pseudo-metamerism, all the segments work as a single unit and they work independently. While in the true metamerism the units work as different units.
True metamerism has the coordination in the segments while the Pseudo-metamerism has zero coordination between the segments.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.