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Human Reproduction

247 Questions Start Allen Test
All Exams Allen
Q126 Allen PYQ MCQ
Changes in GnRH pulse frequency in females is controlled by circulating levels of :-
A.
estrogen and progesterone
B.
estrogen and inhibin
C.
progesterone only
D.
progesterone and inhibin
Q127 Allen PYQ MCQ
Identify the correct statement on 'inhibin' :-
A.
Inhibits the secretion of LH, FSH and Prolactin.
B.
Is produced by granulose cells in ovary and inhibits the secretion of FSH.
C.
Is produced by granulose cells in ovary and inhibits the secretion of LH.
D.
Is produced by nurse cells in testes and inhibits the secretion of LH.
Q128 Allen PYQ MCQ
Several hormones like hCG, hPL, estrogen, progesterone are produced by :-
A.
Fallopian tube
B.
Pituitary
C.
Ovary
D.
Placenta
Q129 Allen PYQ MCQ
Which of the following depicts the correct pathway of transport of sperms?
A.
Rete testis ā†’ Vas deferens ā†’ Efferent ductules ā†’ Epididymis
B.
Efferent ductules ā†’ Rete testis ā†’ Vas deferens ā†’ Epididymis
C.
Rete testis ā†’ Efferent ductules ā†’ Epididymis ā†’ Vas deferens
D.
Rete testis ā†’ Epididymis ā†’ Efferent ductules ā†’ Vas deferens
Q130 Allen PYQ Match the Columns
Match Column-I with Column-II and select the correct option using the codes given below:
Column-IColumn-II
(A)Mons pubis
(B)Antrum
(C)Trophectoderm
(D)Nebenkern
(I)Embryo formation
(II)Sperm
(III)Female external genitalia
(IV)Graafian follicle
A.
Aā€”III, B-I, C-IV, D-II
B.
Aā€”I, B-IV, C-III, D-II
C.
Aā€”III, B-IV, C-II, D-I
D.
A-III, B-IV, C-I, D-II
Q131 Allen PYQ MCQ
Capacitation occurs in :-
A.
Epididymis
B.
Vas deferens
C.
Female reproductive tract
D.
Rete testis
Q132 Allen PYQ MCQ
A temporary endocrine gland in the human body is:-
A.
Corpus cardiacum
B.
Corpus luteum
C.
Corpus allatum
D.
Pineal gland
Q133 Allen PYQ MCQ
GnRH, a hypothalamic hormone, needed in reproduction, acts on:-
A.
anterior pituitary gland and stimulates secretion of LH and FSH.
B.
posterior pituitary gland and stimulates secretion of oxytocin and FSH.
C.
posterior pituitary gland and stimulates secretion of LH and relaxin.
D.
anterior pituitary gland and stimulates secretion of LH and oxytocin.
Q134 Allen PYQ MCQ
Hormones secreted by the placenta to maintain pregnancy are :
A.
hCG, hPL, progestogens, prolactin
B.
hCG, hPL, estrogens, relaxin, oxytocin
C.
hCG, hPL, progestogens, estrogens
D.
hCG, progestogens, estrogens, glucocorticoids
Q135 Allen PYQ MCQ
The difference between spermiogenesis and spermiation is :-
A.
In spermiogenesis spermatids are formed, while in spermiation spermatozoa are formed.
B.
In spermiogenesis spermatozoa are formed, while in spermiation spermatids are formed.
C.
In spermiogenesis spermatozoa from Sertoli cells are released into the cavity of seminiferous tubules, while in spermiation spermatozoa are formed.
D.
In spermiogenesis spermatozoa are formed, while in spermiation spermatozoa are released from Sertoli cells into the cavity of seminiferous tubules.
Q136 Allen PYQ MCQ
The amnion of mammalian embryo is derived from :-
A.
ectoderm and mesoderm
B.
endoderm and mesoderm
C.
mesoderm and trophoblast
D.
ectoderm and endoderm
Q137 Allen PYQ MCQ
Select the correct sequence of transport of sperm cells in male reproductive system :-
A.
Testis ā†’ Epididymis ā†’ Vasa efferentia ā†’Rete testisā†’Inguinal canal ā†’ Urethra
B.
Seminiferous tubules ā†’ Rete testis ā†’ Vasa efferentia ā†’ Epididymis ā†’ Vas deferens ā†’ Ejaculatory duct ā†’ Urethra ā†’ Urethral meatus
C.
Seminiferous tubules ā†’ Vasa efferentia ā†’Epididymisā†’Inguinal canal ā†’ Urethra
D.
Testis ā†’ Epididymis ā†’ Vasa efferentia ā†’ Vas deferens ā†’ Ejaculatory duct ā†’ Inguinal canalā†’Urethraā†’Urethral meatus
Q138 Allen PYQ MCQ
Extrusion of second polar body from egg nucleus occurs :
A.
after entry of sperm but before fertilization
B.
after fertilization
C.
before entry of sperm into ovum
D.
simultaneously with first cleavage
Q139 Allen PYQ MCQ
No new follicles develop in the luteal phase of the menstrual cycle because :
A.
Follicles do not remain in the ovary after ovulation
B.
FSH levels are high in the luteal phase
C.
LH levels are high in the luteal phase
D.
Both FSH and LH levels are low in the luteal phase
Q140 Allen PYQ MCQ
Which of the following hormone levels will cause release of ovum (ovulation) from the Graafian follicle?
A.
Low concentration of FSH
B.
High concentration of Estrogen
C.
High concentration of Progesterone
D.
Low concentration of LH
Q141 Allen PYQ Match the Columns
Match the following columns and select the correct option :- Match Column-I with
Column-IColumn-II
(A)Placenta
(B)Zona pellucida
(C)Bulbo-urethral
(D)Leydig cells
(I)Androgens
(II)Human Chorionic Gonadotropin (hCG)
(III)Layer of the ovum glands
(IV)Lubrication of the Penis
A.
(A)āˆ’(II), (B)āˆ’(III), (C)āˆ’(IV), (D)āˆ’(I)
B.
(A)āˆ’(IV), (B)āˆ’(III), (C)āˆ’(I), (D)āˆ’(II)
C.
(A)āˆ’(I), (B)āˆ’(IV), (C)āˆ’(II), (D)āˆ’(III)
D.
(A)āˆ’(III), (B)āˆ’(II), (C)āˆ’(IV), (D)āˆ’(I)
Q142 Allen PYQ MCQ
Meiotic division of the secondary oocyte is completed :-
A.
At the time of fusion of a sperm with an ovum
B.
Prior to ovulation
C.
At the time of copulation
D.
After zygote formation
Q143 Allen PYQ MCQ
Receptors for sperm binding in mammals are present on:-
A.
Corona radiata
B.
Vitelline membrane
C.
Perivitelline space
D.
Zona pellucida
Q144 Allen PYQ MCQ
Which of these is not an important component of initiation of parturition in humans?
A.
Increase in estrogen and progesterone ratio
B.
Synthesis of prostaglandins
C.
Release of Oxytocin
D.
Release of Prolactin
Q145 Allen PYQ MCQ
Which of the following secretes the hormone, relaxin, during the later phase of pregnancy?
A.
Graafian follicle
B.
Corpus luteum
C.
Foetus
D.
Uterus
Q146 Allen PYQ MCQ
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:
A.
Both Statement I and Statement II are incorrect
B.
Statement I is correct but Statement Il is incorrect
C.
Statement I is incorrect but Statement II is correct
D.
Both Statement I and Statement II are correct
Q147 Allen PYQ MCQ
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:
A.
(b) and (c) only
B.
(b), (d) and (e) only
C.
(b), (c) and (e) only
D.
(c), and (e) only
Q148 Allen PYQ MCQ
Arrange the components of mammary gland. (from proximal to distal)
(a) Mammary duct
(b) Lactiferous duct
(c) Alveoli
(d) Mammary ampulla
(e) Mammary tubules
Choose the most appropriate answer from the options given below :
A.
(c) $\rightarrow$ (a) $\rightarrow$ (d) $\rightarrow$ (e) $\rightarrow$ (b)
B.
(b) $\rightarrow$ (c) $\rightarrow$ (e) $\rightarrow$ (d) $\rightarrow$ (a)
C.
(c) $\rightarrow$ (e) $\rightarrow$ (a) $\rightarrow$ (d) $\rightarrow$ (b)
D.
(e) $\rightarrow$ (c) $\rightarrow$ (d) $\rightarrow$ (b) $\rightarrow$ (a)
Q149 Allen PYQ MCQ
How many secondary spermatocytes are required to form 400 million spermatozoa ?
A.
50 million
B.
100 million
C.
200 million
D.
400 million
Q150 Allen PYQ MCQ
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 thyroxine is increased in the maternal blood.
Reason (R) : Pregnancy is characterised by metabolic changes in the mother.
In the light of the above statements,
choose the most appropriate answer from the options given below :
A.
Both (A) and (R) are correct and (R) is the correct explanation of (A)
B.
Both (A) and (R) are correct but (R) is not the correct explanation of (A)
C.
(A) is correct but (R) is not correct
D.
(A) is not correct but (R) is correct