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

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): During pregnancy the level of...

Receptors for sperm binding in mammals are present on :

Which of these is not an important component of initiation of parturition in humans?

Which of the following secretes the hormone, relaxin, during the later phase of pregnancy?

Meiotic division of the secondary oocyte is completed

Which of the following hormone levels will cause release of ovum (ovulation) from the graffian follicle?

Match the following columns and select the correct option. Column-I Column-II (A) Placenta (i) Androgens (B) Zo...

Extrusion of second polar body from egg nucleus occurs :

Select the correct sequence for transport of sperm cells in male reproductive system :

The difference between spermiogenesis and spermiation is

Hormones secreted by the placenta to maintain pregnancy are

The amnion of mammalian embryo is derived from

Match the items given in column I with those in column II and select the correct option given below. .tg {border-collapse:collapse;border-spacing:0;...

Capacitation occurs in

Match column I with column II and select the correct option using the codes given below. .tg {border-collapse:collapse;border-spacing:0;} .tg td{fo...

Which of the following depicts the correct pathway of transport of sperms?

Several hormones like hCG, hPL, estrogen, progesterone are produced by

Fertilisation in humans is practically feasible only if

Changes in GnRH pulse frequency in females is controlled by circulating levels of

Select the incorrect statement.

Identify the correct statement on 'inhibin'.

In human females, meiosis-II is not completed until

Ectopic pregnancies are referred to as

Which of the following events is not associated with ovulation in human life?

Which of the following layers in an antral follicle is acellular?

Capacitation refers to changes in the

Hysterectomy is surgical removal of

Which of the following cells during gametogenesis is normally diploid?

Which of these is not an important component of initiation of parturition in humans?

The shared terminal duct of the repoductive and urinary system in the human male is

The main function of mammalian corpus luteum is to produce

Select the correct option describing gonadotropin activity in a normal pregnant female.

In our society women are blamed for producing female children. Choose the correct answer for the sex-determination in humans.

The foetal ejection reflex in humans triggers the release of

The figure shows a section of human ovary. Select the option which gives the correct identification of either A or B with function/ characteristic. ...

Which of the following is not the function of placenta?

What is the correct sequence of sperm formation?

Menstrual flow occurs due to lack of :

The secretory phase in the human menstrual cycle is also called :

Identify the human developmental stage shown below as well as the related right place of its occurrence in a normal pregnant woman, and select the rig...

Signals for parturition originate from :

Which one of the following statements is false in respect of viability of mammalian sperm?

The leydig's cells as found in the human body are the secretory source of

In a normal pregnant woman, the amount of total gonadotropin activity was assessed. The results expected was :

About which day in a normal human menstrual cycle does rapid secretion of LH (popularly called LH-surge) normally occurs?

What happens during fertilization in humans after many sperms reach close to the ovum?

The testes in humans are situated outside the abdominal cavity inside a pouch called scrotum. The purpose served is for :

If for some reason, the vasa efferentia in the human reproductive system get blocked, the gametes will not be transported from :

The figure given below depicts a diagrammatic sectional view of the female reproductive system of humans. Which one set of three parts out of I-VI hav...

Signals from fully developed foetus and placenta ultimately lead to parturition which requires the releas of

In human female the blastocyst

Secretions from which one of the following are rich in fructose, calcium and some enzymes?

Sertoli cells are found in :

Vasa efferentia are the ductules leading from :

The first movements of the foetus and appearance of hair on its head are usually observed during which month of pregnancy?

Seminal plasma in human males is rich in

The second maturation division of the mammalian ovum occurs

Which one of the following statements about human sperm is correct?

Which one of the following statements about morula in humans is correct?

The part of Fallopian tube closest to the ovary is

Which one of the following is the correct matching of the events occurring during menstrual cycle ?

Given below is a diagrammatic sketch for a portion of human male reproductive system. Select the correct set of the names of the parts labelled A, B, ...

Seminal plasma in humans is rich in :

The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is :

Foetal ejection reflex in human female is induced by

Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female ?

A change in the amount of yolk and its distribution in the egg will effect :

In human adult females oxytocin:

In humans, at the end of the first meiotic division, the male germ cells differentiate into the:

Which one of the following statements is incorrect about menstruation?

Which extraembryonic membrane in humans prevents desiccation of the embryo inside the uterus?

Which part of ovary in mammals acts as an endocrine gland after ovulation ?

In the human female, menstruation can be deferred by the administration of:-

Sertoli cells are regulated by the pituitary hormone known as-

Withdrawal of which of the following hormones is the immediate cause of menstruation ?

Grey crescent is the area -

If mammalian ovum fails to get fertilized, which one of the following is unlikely

Which of the following hormones is not a secretion product of human placenta -

Ovulation in the human female normally takes place during the menstrual cycle -

During embryonic development, the establishment of polarity along anterior/posterior, dorsal/ventral or medial/lateral axis is called : -

What is true for cleavage : -

Which set is similar : -

Blastopore is the pore of :