Practice question
Question
A typical angiosperm embryo sac at maturity is described as '7-celled and 8-nucleate'. Which of the following cells are haploid?
Explanation
In the embryo sac, the Egg cell, Synergids, and Antipodals are all derived from the haploid megaspore via mitosis, so they are haploid (n). The Central cell contains two polar nuclei (n+n) before fertilization. The Zygote (2n) and Primary Endosperm Nucleus (3n) are post-fertilization structures.
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