Answer:
The most common type of worms found in cats are roundworm and tapeworm. These are the ones you will usually see in the poop. Roundworm are round and long, resembling a spaghetti noodle. Tapeworms are flat and usually in segments, although they can sometimes be whole (very very long).
Cats may also get ringworm (which is actually a fungus and not really a worm), heart worm, hookworm and lung worm.