Question

Study the following lists:

$21$

The correct match is

• A. $A & B & C & D \\ V & IV & I & II$
• B. $A & B & C & D \\ II & V & III & I$
• C. $A & B & C & D \\ I & II & V & IV$
• D. $A & B & C & D \\ IV & I & II & V$

Answer 1

Answer: (A)

Eukaryotic cell is said to be haploid (n) if it has single set of chromosome, and diploid (2n), if it has homologous pairs of chromosomes. Chromosomes are thread-like structures located inside the nucleus of Eukaryotic cells. Each chromosome is formed of protein and deoxyribonucleic acid (DNA). These are heredity unit, passed from parents to offsprings.
Endosperm (3n) in most flowering plant is triploid because one of the two male gametes (n) fused with two polar nuclei (2n).

• Pisum sativum (pea) is diploid (2n) having 14 chromosomes. So, n=7 and 3n=21.
• Oryza sativa (rice) is 2n=24. So, n=12 and 3n=36
• Nicotiaba tabacum (tobacco) is 2n=48. So, n=24 and 3n=72.
• Allium cepa (onion) is 2n=16. So, n=8 and 3n=24