SOLUTION

Hydrilla plant shows the presence of cellulosic cell wall surrounding its cell membrane. 
Mango tree is an angiosperm plant. It shows the presence of thick cellulosic cell wall.  
Cactus is a xerophytic plant. It shows the presence of thick, cellulosic cell wall. Cell wall prevents the loss of water from plant body. 
Bacteria shows cell wall around its cell membrane. The bacterial cell wall is made up of peptidoglycan.