Which among the following has 23 chromosomes ?

Secondary spermatocytes

The correct answer is Option (4) - Secondary spermatocytes

Oogonia – These are diploid (2n) cells found in the ovaries and have 46 chromosomes.

Zygote – Formed after fertilization, so it’s also diploid (46 chromosomes).

Spermatogonia – These are the stem cells for sperm production, also diploid (46 chromosomes).

Secondary spermatocytes – These are formed after meiosis I from primary spermatocytes and are haploid (23 chromosomes).