Examine the microscope slide of the shrimp Mysis sp. You can see the segmentation and differentiated appendages. Examine the compound eye closely and draw the structures mentioned above. Examination of Chilopoda - Centipedes are active, predatory, terrestrial arthropods. They live beneath stones and logs and in crevices.
Most species have no compound eyes but they often have antennae.
Examination of Diplopoda - Millipedes feed on decaying vegetation and they spend much of their time in burrows or in the leaf litter. Some inhabit the burrows of other organisms or even ant nests. Compare the millipede specimens with the centipedes, noting the difference in body form, the number of legs per diplosegment , and the morphology of the mouthparts. Examination of Pycnogonida -Sea spiders live in marine environments, and they may be found at intertidal habitats. They feed on the soft tissues of other marine invertebrates.