Answer
Gametes that fertilize an ovum are called the sperms
Explanation
The reproductive cells of an organism are called the gametes or sex cells. Female sex cells are the ova/egg where as male sex cells are the sperms. The sperms are stored in the scrotum after their production in the male testes where as the eggs for females mature in female ovaries. During fertilization, sex cells meet in the Fallopian tube.
A viron is sorta like a virus. A virus is a small infectious agent that replicates only inside the living cells of other organisms. Viruses can infect all types of forms, from animals and plants to bacteria and archaea.
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C. Bacteria are multicellular
viruses have no DNA or RNA so they can't be unicellular or multicellular
That would be animals getting isolated into different groups in different locations. These animals would have to breed AND adapt to that location, otherwise they will become extinct. When each species adapts and breeds to agree with a different location, that would be called speciation.
Their <em><u>stomach</u></em> or <em><u>belly</u></em> helps them adapt.