Final answer:
The magmata in different arthropod groups can differ in composition and number of segments. Arthropods also have different respiratory systems and excretory organs among their different groups.
Step-by-step explanation:
The magmata in different arthropod groups can differ in several ways.
Arthropods have a segmented body with fusion of certain segments to form functional regions called tagmata. These tagmata, such as the head, thorax, and abdomen, or cephalothorax and abdomen, can vary in composition and number of segments among different arthropod groups.
Arthropods also have different respiratory systems, with insects and myriapods using tracheae for gas exchange, while crustaceans utilize gills and arachnids employ book lungs. The organs used for nitrogenous waste excretion can also differ, with crustaceans possessing green glands and insects using Malpighian tubules.