If the diploid number of a flowering plant is 36. What would be the chromosome number in its endosperm?
1. 36
2. 18
3. 54
4. 72
Endosperm is a product of triple fusion. One male nuclei (n=18) fuses with diploid secondary nucleus (2n = 36), so it becomes triploid structure (2n=54). So, ploidy of endosperm is (3n) and chromosomes will be 54.