The fusion of two gametes dissimilar in size is called
A
isogamy
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B
anisogamy
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C
zoogamy
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D
oogamy
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Solution
The correct option is B anisogamy Anisogamy is the fusion of two gametes that are dissimilar in size. Isogamy is the fusion of gametes that are similar in size. Oogamy is the fusion of a large non-motile gamete with a small motile gamete. All these are types of syngamy(fertilization). Zoogamy is the sexual reproduction of animals.