Ploidy level in French Marigold is

Ploidy level in French Marigold is Tetraploid.
Ploidy level is a term referring to the number of chromosome sets in somatic cells of the diplophase (2N) or gametophytic cells of the haplophase (1N).
An organism whose somatic cells are tetraploid (four sets of chromosomes), for example, will produce gametes by meiosis that contain two sets of chromosomes.
The botanical name of the French marigold is Tagetuspatula. These plants grow dwarf with a plant height of 40 cm. The chromosome Number of this species is 2n = 48.