If one set of chromosomes for a given plant is represented as N; in case of double fertilization, the zygote and the endosperm nucleus of a diploid plant would have how many sets of chromosomes respectively?

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Q: 37 (NDA-II/2018)
If one set of chromosomes for a given plant is represented as N; in case of double fertilization, the zygote and the endosperm nucleus of a diploid plant would have how many sets of chromosomes respectively?

question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,1,8,6,1,1,1

keywords: 

{'chromosomes': [4, 1, 0, 1], 'diploid plant': [0, 0, 0, 1], 'double fertilization': [0, 0, 0, 1], '2n': [0, 0, 0, 1], 'endosperm nucleus': [0, 0, 0, 1], '3n': [0, 0, 0, 1], 'many sets': [0, 0, 0, 1], 'plant': [1, 0, 0, 2], 'zygote': [0, 0, 0, 4]}

In the case of double fertilization, the zygote and the endosperm nucleus of a diploid plant would have different sets of chromosomes. The zygote, which is formed by the fusion of a haploid egg cell and a haploid sperm cell, would have 2 sets of chromosomes, represented as 2N. This is because each parent contributes one set of chromosomes, resulting in a total of two sets.

On the other hand, the endosperm nucleus, which is formed by the fusion of a haploid central cell and a haploid sperm cell, would have 3 sets of chromosomes, represented as 3N. This is because the central cell, which already has two sets of chromosomes, fuses with a sperm cell that contributes an additional set.

Therefore, option 4, which states that the zygote and the endosperm nucleus of a diploid plant would have 2N and 3N sets of chromosomes respectively, is the correct answer.