Mention the ploidy of the following: protonematal cell of a moss; primary endosperm nucleus in dicot; leaf cell of a moss; prothallus cell of a fern; gemma cell in Marchantia; meristem cell of monocot; ovary of a flower; and zygote of a fern.
Primary endosperm nucleus is diploid (2n)
Primary endosperm nucleus is TRIPLOID (3n) — formed by triple fusion
Double fertilisation: zygote (2n) + primary endosperm nucleus (3n)
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