(C) Capsella is an angiosperm. The leaf cells are diploid $(2n)$.Given,$2n = 46$,so the haploid number $(n)$ is $46 / 2 = 23$.The endosperm in angiosp

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(C) Capsella is an angiosperm. The leaf cells are diploid $(2n)$.Given,$2n = 46$,so the haploid number $(n)$ is $46 / 2 = 23$.The endosperm in angiosperms is formed by triple fusion (one male gamete + two polar nuclei),making it triploid $(3n)$.Therefore,the number of chromosomes in the endosperm = $3n = 3 \times 23 = 69$.