Sperm
*The sperm is the smallest cell in                the male body.
l     It can move or swim on its own                                                                             by moving its tail in the fluid.
*Each sperm has three sections;                                                                        head, neck and tail.
*The sperm nucleus contains                                                                          heredity substances that can be                passed on to the next generation.
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l                                                                         Figure 2 : Structure of the sperm