ploidy of primary spermatocytes and secondary spermatocytes?

Q. Spermatids are formed after the second meiotic division from secondary spermatocytes. The ploidy of the secondary spermatocytes is

Q. Assertion :The type B spermatogonia are called primary spermatocytes. Reason: Primary spermatocytes complete the first meiotic division leading to secondary spermatocytes.

Q. Which of the following is haploid?

Q. What are the diploid stages in gametogenesis?

Q. How is a primary spermatocyte different from a secondary spermatocyte?