Select the correct option of haploid cells from the following groups
Primary spermatocyle, Secondary spermatocyte, Second polar body
Primary oocyte, Secondary oocyte, Spermatid
Secondary spermatocyte, First polar body, Ovum
Spermatogonia, Primary spermatocyte, Spermatid
In mammals growing oocytes are surrounded by special nutritive cells called
Germ cells in mammalian gonads are produced by
In Spermiogenesis.........
$A$ : In spermatogenesis, the first haploid forms are spermatids.
$R$ : All the end of meiosis cells have haploid set of chromosomes.
Ejaculation of human male contains about $200 -300$ million sperms, of which for normal fertility ____ $\%$ sperms must have normal shape and size and at least ____$\%$ must show energetic motility.