Gametogenesis

In which of the following phases all organisms have to pass through it before they can reproduce sexually?

Choose the correct option to label the region $X$.

Complete the analogy:

FSH : Sertoli cells :: LH : ____.

Which of the following pathway is correct for the transport of spermatozoa?

In male, for normal fertility, $\underset{¯}{X}$ sperms must have normal shape and size and $\underset{¯}{Y}$ sperms must show vigorous motility.
$\underset{¯}{X}\underset{¯}{Y}$

How many secondary spermatocytes are required to form $400$ spermatozoa?

If a lady wants to postpone her regular menstruation cycle for some reasons, which is administered?

Meiosis I of primary oocyte in human is completed within

What is correct sequence of spermatogenesis?

Given below are four statements pertaining to fertilization in human beings. Identify the correct statement.

I. Fertilisation can occur if the ovum and the sperms are transported simultaneously to the ampullary region of the Fallopian tube.

II. The secretion of the acrosomes helps the sperm enter the cytoplasm of the ovum.

III. The completion of the meiotic division of the secondary oocyte is induced by the entry of sperms into it.

IV. Hyaluronidase secreted by the acrosomes ensures that only one sperm can fertilise the ovum.

Choose the correct option:

Assertion (A): In a woman after hysterectomy (removal of the uterus), the ovarian cycle is stopped.

Reason (R): Stoppage of FSH secretion.

In human females, when does oogenesis begin?

Follicular atresia is responsible for

Which of the following is a non-cellular layer in the Graafian follicle?

The level of follicle-stimulating hormone $\left(\mathrm{FSH}\right)$ during infancy and adulthood is the same but spermatogenesis is seen only during adulthood. $\mathrm{mRNA}$ levels coding for $\left(\mathrm{FSH}\right)$ receptors is also found to be the same in the testis of both age groups. Which of the following investigations will clarify this paradox a little more?

The acrosome of a sperm is a derivative of _______.

Find out the CORRECT sequence of spermatogenesis.

What is the role of acrosin?