The first menstruation is called :

Identify the correct option (A), (B), ( C), (D) with respect to spermatogenesis.

Which of the following statements are true for spermatogenesis but do not hold true for Oogenesis?
(a) It results in the formation of haploid gametes.
(b) Differentiation of gamete occurs after the completion of meiosis.
(c) Meiosis occurs continuously in a mitotically dividing stem cell population.
(d) It is controlled by the Luteinizing hormone (LH) and Follicle Stimulating Hormone (FSH) secreted by the anterior pituitary.
(e) It is initiated at puberty.
Choose the most appropriate answer from the options given below:

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

Select the incorrect statement

Match List - I with List - II.

Choose the correct answer from the options given below :

Find the correct statements :
A. In human pregnancy, the major organ systems are formed at the end of 12 weeks.
B. In human pregnancy the major organ systems are formed at the end of 8 weeks.
C. In human pregnancy heart is formed after one month of gestation.
D. In human pregnancy, limbs and digits develop by the end of second month.
E. In human pregnancy the appearance of hair is usually observed in the fifth month.
Choose the correct answer from the options given below :

Consider the following:
A. The reductive division for the human female gametogenesis starts earlier than that of the male gametogenesis.
B. The gap between the first meiotic division and the second meiotic division is much shorter for males compared to females.
C. The first polar body is associated with the formation of the primary oocyte.
D. Luteinizing Hormone (LH) surge leads to disintegration of the endometrium and onset of menstrual bleeding.
Choose the correct answer from the options given below :

Given below are two staements:
Statement I: The presence or absence of hymen is not a reliable indicator of virginity.
Statement II: The hymen is torn during the first coitus only.
In the light of the above staements, choose the correct answer from the options given below:

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R :
Assertion A : Breast - feeding during initial period of infant growth is recommended by doctors for bringing a healthy baby .
Reason R : Colostrum contains several antibodies absolutely essential to develop resistance for the new born baby .
In the light of the above statements , choose the most appropriate answer from the options given below :

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R :
Assertion A : FSH acts upon ovarian follicles in female and Leydig cells in male .
Reason R : Growing ovarian follicles secrete estrogen in female while interstitial cells secrete androgen in male human being .
In the light of the above statements , choose the correct answer from the options given below :

Which of the following is not a component of Fallopian tube?

In angiosperm, the haploid, diploid and triploid structures of a fertilized embryo sac sequentially are:

Which of the following statements are correct regarding female reproductive cycle ?
A. In non-primate mammals cyclical changes during reproduction are called oestrus cycle.
B. First menstrual cycle begins at puberty and is called menopause.
C. Lack of menstruation may be indicative of pregnancy.
D. Cyclic menstruation extends between menarche and menopause.
Choose the most appropriate answer from the options given below :

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : Endometrium is necessary for implantation of blastocyst.
Reason R: In the absence of fertilization, the corpus luteum degenerates that causes disintegration of endometrium.
In the light of the above statements, choose the correct answer from the options given below:

Given below are two statements :
Statement I : Vas deferens receives a duct from seminal vesicle and opens into urethra as the ejaculatory duct.
Statement II : The cavity of the cervix is called cervical canal which along with vagina forms birth canal.
In the light of the above statements, choose the correct answer from the options given below :

Given below are two statements:
Statement I : The release of sperms into the seminiferous tubules is called spermiation.
Statement II : Spermiogenesis is the process of formation of sperms from spermatogonia.
In the light of the above statements, choose the most appropriate answer from the options given below:

At which stage of life the oogenesis process is initiated?

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

Receptors for sperm binding in mammals are present on:

Match List-I with List-II.

Choose the correct answer from the options given below.

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

Meiotic division of the secondary oocyte is completed:

Match the following columns and select the correctoption.

Extrusion of second polar body from egg nucleus occurs

Which of the following sexually transmitted diseases is not completely curable ?

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

Hormones secreted by the placenta to maintain pregnancy are

The difference between spermiogenesis and spermiation is

The amnion of mammalian embryo is derived from

A temporary endocrine gland in the human body is

Capacitation occurs in

GnRH, a hypothalamic hormone, needed in reproduction, acts on

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

Identify the correct statement on ‘inhibin’.

Which of the following pairs of hormones are not antagonistic (having opposite effects) to each other ?

Fertilisation in humans is practically feasible only if