What do you mean by plasmogamy??

reproduction stage of fungai

Plasmogamy is the stage in the sexual reproduction of fungi, in which the plotoplasm of two different cells, fuses together with the fusion of nuclei effectively bringing two haploid nuclei close together in the same cell.

Plasmogamy is the fusion of two hyphal protoplast.

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The rest of the energy were converted to heat energy

Explanation:

The chemical energy from the cell phone battery converted to both the sound energy and heat energy. No energy wasted, Energy always convert from one form to another form, it can never reduces or increases.