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Plant fertilization happens from plant to plant and forms through other factors like wind.

While the Animal fertilization happens from animal to animal and requires the motion, but some animals also releases and fertilize other animals through ocean movements,

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Plant Fertilization is the male pollen grains which are located in bags (anther) go out of the anther when its cut in the spring time while Animal Fertilization is during the sexual operation the male sperm liquid produce from the testicles is ejaculated from the penis to the female vagina containing the sperms that contains the male's characteristics.