Their purpose is reproduction.
A Eukaryotic cell engulfing a bacterial cell.
You may want to know that the bacteria which used to photosynthesise , after they have been engulfed by an eukaryotic cell , they evolved into Chloroplasts .
However for the bacteria which used to respire , they have evolved into mitochondria.
Hope this helps :) Good Luck !
the answer is Ocell because a cell is the building block of all things
Answer: Of all the branches of complex animals, sponges are the only group lacking TRUE TISSUE.
Explanation: