LET'S START OUR STUDY.
General aspect of the ABO
First we cut out the part of the foot on which rests the chemical drill (= Accessory Boring Organ: ABO).
Then we look at its
general aspect
under low magnification with a SEM.
The ABO is shaped like a smooth
mushroom and rests on the surface of the snail foot (by the way,
this is not the whole foot, just the part that we cut).