If the diploid number of a flowering plant is 36. What would be the chromosome number in its endosperm
(a) 36
(b) 18
(c) 54
(d) 72
Ans. (c) 54
Endosperm is formed after fusion between a haploid male gamete and diploid secondary nucleus. Thus, endosperm has triploid nucleus; which will have three times the number of chromosomes as in a haploid nucleus.