Arthropod

This is a grasshopper , from the phylum of arthropods.
It's body is divided in three main parts:
Head : composed by antennae,compound eye,brain and mouth
Thorax: that  connect head region to the abdomen. Composed by nerve cords and digestive tract
Abdomen: final region composed by ovary,heart,wings,spiracle,malphighian tubules, tracheal tube

Interesting thing of grasshopper is their incomplete metamorphosis in which they increase in size . While in the opposite side some of arthropod like butterfly do a complete metamorphosis in which they change completely from their parents.

Flatworm

This is a flatworm , its phylum is Platyhelmintes , and it is parasitic and freeliving. The thing that i find most interesting of this worm is that it is also hermaphrodite , i found its life  cicle most interesting.