The three different skeletal designs that give a body its shape are:
Hydrostatic skeleton-contraction of muscles occur for changing cooler, due to which movement is caused.
Exoskeleton-external skeleton composed of calcium carbonate and chitin
Endoskeleton-body's internal system made of hard mineralised components.
During prophase<span>, chromatin forms into chromosomes, and the nuclear envelope breaks down.</span>
Sometimes some questions don't have a submit button. This happened to me and I know that you just have to move onto another question. Then when you find one that has an answer button you type in you answer and press the answer button for points.
D. Is the answer you are looking for, because the new bacterium is almost always the same as the parent. Answer D. Is not true.