Somatic chromosome number of Allium cepa is

Question

Question

This question was previously asked in

WBSSC SLST (Class 9-10) Life Science Official Paper Held On 04 Dec, 2016

Answer 1

The correct answer is 16

Explanation:

The somatic chromosome number refers to the total number of chromosomes present in the somatic (body) cells of an organism.
Allium cepa, commonly known as onion, is a widely studied plant in genetics due to its relatively large chromosomes and ease of cultivation.
Allium cepa has a diploid number of chromosomes equal to 16 (8 pairs).
Each cell of the onion contains 16 chromosomes in its somatic cells, while its gametes (reproductive cells) would have half this number, i.e., 8 chromosomes.

Species	Common name	Number of chromosomes (Haploid set)
Homo sapiens	Humans	23
Oryza sativa	Rice	12
Zea mays	Maize	10
Allium cepa	Onion	8
Pisum sativum	Pea	7
Triticum aestivum	Wheat	21
Vicia faba	Bean	6
Solanum tuberosum	Potato	24