The bacteria shown in the image is Gram negative because of following characteristic-
0. The wall is two-layered.
,1. The wall is wavy.
,2. Outer membrane is present.
Gram negative bacteria are those which do not retain the Grams stain which consist of alkaline solution of crystal violet,then treated with 0.5% iodine solution followed by washing with water or acetone.
The bacteria which retain blue or purple color are gram positive bacteria.
Ex of Gram negative bacteria-E.coli
