Question

How is metameric segmentation of animal body different from non metameric segmentation?

Answer 1

Metamerism is found in annelids and Arthropds mainly.Due to this character their body is segmented completely.Body is like train with many compartments.
eg:Earthworm, scorpion etc
The difference between organism showing metamerism and without metamerism is the absence of segmentation of body.
eg :Mammals

Answer 2

$\rightarrow\huge\text{Answer}$

➽ metameric segmentation

external segmentation correspond to internal segmentation , e.g., Earthworm.

➽ non - metameric segmentation

External segmentation do not correspond internal segmentation , dg. platyhelminthes.