I tried out putting chapstick on the side, erasing the side of the scantron, coloring in the bars next to the questions, etc. Scantrons have gotten so much more high tech and it's probably impossible to cheat in ways such as that.o it doesn't work! scantrons optically sense marks made on the scantron sheet and compare the marks to those on the answer key sheet. If anything, the extra marks on the scantron made by the chapstick will cause the grading machine to mark the answer as incorrect even if the answer was correct.
Snakes shed their skin to allow for further growth and to remove parasites that may have attached to their old skin. As a snake grows, its skin becomes stretched. Unlike human skin, a snake 's skin doesn't grow as the animal grows. Eventually, a snake 's skin reaches a point where further growth is not possible.
Skin adaptations and cutaneous appendages. 1  Spectacles-they are clear scales over the eyes of snakes. 2  Heat sensory pits (infrared-sensitive receptors) - they are deep grooves between the nares and the eye of pit vipers, pythons and some boas which allow them to 'see' the radiated heat of their prey.lands. Almost no skin glands occur in snakes, but coacal scent glands (anal glands) are present. They occur at the base of the tail, dorsal to the hemipenes in a male, and open into the posterior margin of the cloaca. The unpleasant odour of these organs plays a defensive role and may also carry social signals.