Q. The triploid number of chromosomes of the first taxon in 10 times more than the haploid number of chromosomes of the second taxon, while the diploid number of the third taxon is six time more than the haploid number of the fourth taxon. Which one of the following shows the ascending order of the number of chromosomes in their respective endosperm?
A) Oryza-Allium-Saccharum-Nicotiana
B) Allium-Oryza-Nicotiana-Saccharum
C) Nicotiana-Saccharum-Oryza-Allium
D) Saccharum-Oryza-Nicotiana-Allium
Explanation
Allium, 2$n$=16 then endosperm has 24 chromosomes. Oryza, 2$n$=24 then endosperm has 36 chromosomes. Nicotiana, 2$n$=48 then endosperm has 72 chromosomes. Saccharum 2$n$=82-124 (Indian cane) then endosperm has 123-186 chromosomes.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.