Correct option is A
Correct answer – (a)
Haploids carry only one set of chromosomes.
They are represented by ‘n’.
They are used in plant breeding.
Information Booster / Facts
Doubled haploids speed up variety development.
They ensure complete homozygosity.
Why other options are incorrect
(b) Doubled haploids are fully homozygous.
(c) Haploids can be produced from pollen.
(d) Ovule culture also produces haploids.