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Question

__________ is the vital link that ensures continuity of species between organisms of one generation and the next.

A
gamete
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B
zygote
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C
embryo
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D
parthenogenesis
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Solution

The correct option is B zygote
The life of every sexually reproducing organism starts as a diploid single-celled zygote. Therefore, zygote is the vital link that ensures continuity of species between organisms of one generation and another.

Gametes are haploid sex cells. They fuse during fertilization and this results in the formation of zygote.

The fusion of male and female gametes is called fertilization resulting in the formation of zygotes. It is the most crucial event during sexual reproduction.

The embryo is formed from the zygote. The zygote undergoes cell division (mitosis) and cell differentiation to form an embryo.

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