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Question
The secondary nucleus of an angiosperm after fertilization is ______.
Options
x
2x
3x
4x
MCQ
Fill in the Blanks
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Solution
The secondary nucleus of an angiosperm after fertilization is 3x.
Explanation:
After fertilization in angiosperms, the secondary nucleus (formed by the fusion of two polar nuclei) fuses with one male gamete. This triple fusion results in a primary endosperm nucleus that is triploid (3x). Thus, the secondary nucleus after fertilization is 3x in ploidy, forming the endosperm nucleus, which nourishes the developing embryo.
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