The answer is Dendroaspis Polyepis (according to Google)
The organism belongs to domain Eukarya since it is multicellular, but its under kingdom Plantae, beacause its makes it own food and plants do that by doing photosynthesis
During when we are alive, oxygen is used to make atp, and atp is used to break cross-brdiges when we are relaxing / contracting our muscles. when a person is dead then there is no oxygen but the body can still produce atp via anaerobic glycolysis, when the glycogen is depleted then no atp is produce so the the cross bridges can no logner be broken that is why skeletal muscles lock
One of the daughter cell would have an extra chromosome while the other would be short one. It's called nondisjunction