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(C) In a haplontic life cycle,the zygote undergoes meiosis to produce four haploid spores or nuclei. In many algae (like $Chlamydomonas$ or $Volvox$),

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Three

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(C) In a haplontic life cycle,the zygote undergoes meiosis to produce four haploid spores or nuclei. In many algae (like $Chlamydomonas$ or $Volvox$),these four haploid nuclei develop into new individuals. However,in specific contexts such as the development of the female gametophyte in angiosperms (which is not strictly haplontic but often compared in terms of nuclear division),three nuclei degenerate. In a typical haplontic life cycle,all four haploid products are usually functional. If the question refers to the formation of the embryo sac (megasporogenesis),then three out of four megaspores degenerate. Given the standard context of this question in biology curricula,the answer is $3$.

In a haplontic life cycle,how many of the four haploid nuclei degenerate?

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