Type of reproduction takes place in archaebacteria and eubacteria

Explanation:

Before knowing their reproduction process let's first understand what is Archaebacteria and Eubacteria.

Archaebacteria- are the oldest living anaerobic organisms on earth. They are unicelled prokaryotes and can live in extreme conditions like inside a volcano vent,  hot springs and acidic/alkaline aquatic environment.

Reproduction-  They reproduce by asexual reproduction process. Binary fission takes place where the genetic material is duplicated and then the cell wall pinches off from the center and thereof divides into two new daughter cells. They may also divide by fragmentation or budding.

Eubacteria- are the most common organisms found and are known as the true bacteria. They are of single celled prokaryotic origin and have no nucleus, They occur commonly in three shapes i.e. round, rod and spiral.

Reproduction- Mostly, they reproduce by binary fission, where the parent cell divides into two new daughter cells. But some may divide by a process called budding where an outgrowth takes place in the parent cell which gets separated later and the parent cell remains with the new cell formed.    

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.