Human Reproduction PYQs

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. Choose the correct answer from the options given below:

Match List I with List II related to embryonic development at various months of pregnancy: Choose the correct answer from the options given below:

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 Choose the correct answer from the options given below :

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 the end 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 :

The first menstruation is called :

Which of the following is an example of a zygomorphic flower?

Identify the type of flowers based on the position of calyx, corolla and androecium with respect to ovary from the given figures (a) and (b)

Given below are two statements: Statement I : Chromosomes become gradually visible under light microscope during leptotene stage. Statement II : The beginning of diplotene stage is recognized by dissolution of synaptonemal complex. In the light of the above statements, choose the correct option from the options below:

Match List I with List II 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 : 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 :

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:

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

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

Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R : Assertion A : A flower is defined as modified shoot wherein the shoot apical meristem changes to floral meristem. Reason R : Internode of the shoot gets condensed to produce different floral appendages laterally at successive nodes instead of leaves. In the light of the above statements, 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 : In gymnosperms the pollen grains are released from the microsporangium and carried by air currents. Reason R : Air currents carry the pollen grains to the mouth of the archegonia where the male gametes are discharged and pollen tube is not formed. 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: 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:

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 the menarche and menopause. Choose the most appropriate answer from the options given below:

At which stage of life is the oogenesis process initiated?

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 Luteinising 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:

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:

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: (a) In Ur

Match the following columns and select the correct option.

Select the incorrect statement regarding inbreeding.

Select the correct sequence of events.

Which of the following hormones is responsible for both the milk ejection reflex and the foetal ejection reflex?

No new follicles develop in the luteal phase of the menstrual cycle because:

The difference between spermiogenesis and spermiation is:

The amnion of mammalian embryo is derived from:

Hormones secreted by the placenta to maintain pregnancy are:

Match the items given in Column I with those in Column II and select the correct option given below:

Select the correct route for the passage of sperms in male frogs:

Capacitation occurs in

Which one of the following generates new genetic combinations leading to variation?

Match Column-I with Column-II and select the correct option using the codes given below.

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

Match Column-I with Column-II and select the correct option using the codes given below:

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

Ectopic pregnancies are referred to as:

Metagenesis refers to:

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

In human females, meiosis-II is not completed until:

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

Which of the following pairs is not correctly matched?

The shared terminal duct of the reproductive 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:

A pregnant female delivers a baby who suffers from stunted growth, mental retardation, low intelligence quotient and abnormal skin. This is the result of

What is the correct sequence of sperm formation?

Menstrual flow occurs due to lack of

Which one of the following is not the function of placenta?

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

Identify the human development stage shown below as well as the related right place of its occurrence in a normal pregnant woman, and select the right option for the two together.

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

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

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

In human female the blastocyst :

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

Seminal plasma in humans is rich in:

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, C and D.

Foetal ejection reflex in human female is induced by:

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

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

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

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

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

Which one of the following statements is incorrect about menstruation?

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:

Which of the following represents the edible part of the fruit of litchi?

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