NEET UG Zoology — Human Reproduction previous year questions with solutions.
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:
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?
Receptors for sperm binding in mammals are present on:
Select the correct option of haploid cells from the following groups:
Match the following columns and select the correct option. <table class="pyq-table"><tbody><tr><td></td><td>Column-I</td><td></td><td>Column-II</td></tr><tr><td>(a)</td><td>Placenta</td><td>(i)</td><td>Androgens</td></tr><tr><td>(b)</td><td>Zona pellucida</td><td>(ii)</td><td>Human Chorionic Gonadotropin (hCG)</td></tr><tr><td>(c)</td><td>Bulbourethral glands</td><td>(iii)</td><td>Layer of the ovum</td></tr><tr><td>(d)</td><td>Leydig cells</td><td>(iv)</td><td>Lubrication of the Penis</td></tr></tbody></table>
Match the following columns and select the correct option:- <table class="pyq-table"><tbody><tr><td colspan="2" rowspan="1">Column-I</td><td colspan="2" rowspan="1">Column-II</td></tr><tr><td>(a)</td><td>Ovary</td><td>(i)</td><td>Human chorionic gonadotropin</td></tr><tr><td>(b)</td><td>Placenta</td><td>(ii)</td><td>Estrogen & Progesterone</td></tr><tr><td>(c)</td><td>Corpus luteum</td><td>(iii)</td><td>Androgens</td></tr><tr><td>(d)</td><td>Leydig cells</td><td>(iv)</td><td>Progesterone only</td></tr></tbody></table>
In human beings, at the end of $12$ weeks (first trimester) of pregnancy, the following is observed:
Meiotic division of the secondary oocyte is completed
No new follicles develop in the luteal phase of the menstrual cycle because
Which of the following hormones is responsible for both the milk ejection reflex and the foetal ejection reflex?
Extrusion of second polar body from egg nucleus occurs
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
Match the items given in Column I with those in Column II and select the correct option given below: <table class="pyq-table"><tbody><tr><td></td><td>Column – I</td><td></td><td>Column – II</td></tr><tr><td>a.</td><td>Proliferative Phase</td><td>i.</td><td>Breakdown of an endometrial lining.</td></tr><tr><td>b.</td><td>Secretory Phase</td><td>ii.</td><td>Follicular Phase</td></tr><tr><td>c.</td><td>Menstruation</td><td>iii.</td><td>Luteal Phase</td></tr></tbody></table>
GnRH, a hypothalamic hormone, needed in reproduction, acts on
Capacitation occurs in
Fertilization in humans is practically feasible only if:
Select the incorrect statement:
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: <table class="pyq-table"><tbody><tr><td colspan="2">Column–I</td><td colspan="2">Column–II</td></tr><tr><td>a.</td><td>Mons pubis</td><td>(i)</td><td>Embryo formation</td></tr><tr><td>b.</td><td>Antrum</td><td>(ii)</td><td>Sperm</td></tr><tr><td>c.</td><td>Trophectoderm</td><td>(iii)</td><td>Female external genitalia</td></tr><tr><td>d.</td><td>Nebenkern</td><td>(iv)</td><td>Graafian follicle</td></tr></tbody></table>
Changes in GnRH pulse frequency in females is controlled by circulating levels of: