Human Reproduction

The acrosomal reaction of sperm is triggered by:

Which of the following hormones is not secreted by human placenta?

The correct sequence of spermatogenic stages leading to the formation of sperms is:

Capacitation occurs in:

Which of the following layers in an antral follicle is made up of granulosa cells?

Leydig cells produce:

The number of autosomes in human sperm is:

Spermatogonia undergo a series of cell divisions to produce sperms. Select the correct statements: A. Spermatogonia always undergo meiotic cell division. B. Primary spermatocytes divide mitotically to produce secondary spermatocytes. C. Secondary spermatocytes, through their second meiotic division, produce haploid spermatids. D. Spermatids produce spermatozoa through mitosis. E. Spermatids transform into spermatozoa by spermiogenesis. ( NEET 2026)

Match List I with List II related to embryonic development at various months of pregnancy — A. The foetus movement starts and hair appears on the head, B. The foetus develops limbs and digits, C. The foetus develops external genital organs, D. The foetus body is covered with fine hair; eyelids separate and eyelashes form — with I. 24 weeks, II. 20 weeks, III. 8 weeks, IV. 12 weeks ( NEET 2026)

Arrange the following cell layers/structures around the female gamete, from outer to inner side: A. Zona pellucida, B. Perivitelline space, C. Corona radiata, D. Plasma membrane of ovum ( NEET 2026)