Biology MCQ
#3 Biology Class XII Human Reproduction (NEET, MHTCET) MCQ
Human Reproduction (NEET, MHTCET) MCQ
1) Which hormone of pituitary gland regulates Sertoli cells?
(a) LH(b) FSH(c) GH(d) prolactin
Answer
(b) FSH
2) The correct sequence of stages in spermatogenesis are:
(a) spermatogonia → spermatid → spermatocyte → sperm(b) spermatocyte → spermatogonia → spermatid → sperm(c) spermatogonia → spermatocyte → spermatid → sperm(d) spermatid → spermatocyte → spermatogonia → sperm
Answer
(c) spermatogonia → spermatocyte → spermatid → sperm
3) Seminal plasma in humans is rich in
(a) fructose and calcium(b) glucose and calcium(c) Progesterone and testosterone(d) potassium and calcium
Answer
(a) fructose and calcium
4) The signals of parturition originate from
(a) placenta(b) fully developed foetus(c) oxytocin released from pituitary(d) both placenta and fully developed foetus
Answer
(d) both placenta and fully developed foetus
5) The Leydig cells are a source of
(a) fructose(b) androgens(c) progesterone(d) mucus
Answer
(b) androgens
6) Choose the incorrect statement from the following. [NCERT Exemplar]
(a) In birds and mammals internal fertilisation takes place.(b) Colostrum contains antibodies and nutrients.(c) Polyspermy in mammals is prevented by the chemical changes in the egg surface.(d) In the human female implantation occurs almost seven days after fertilisation.Answer
(c) Polyspermy in mammals is prevented by the chemical changes in the egg surface.
7) The function of corpus luteum is to produce
(a) estrogen(b) progesterone(c) HCG(d) relaxin
Answer
(b) progesterone
8) Identify the correct statement from the following. [NCERT Exemplar]
(a) High levels of estrogen triggers the ovulatory surge.(b) Oogonial cells start to proliferate and give rise to functional ova in regular cycles from puberty onwards.(c) Sperms released from seminiferous tubules are highly motile/non-motile.
(d) Progesterone level is high during the post ovulatory phase of menstrual cycle.
Answer
(d) Progesterone level is high during the post ovulatory phase of menstrual cycle.
9) Spot the odd one out from the following structures with reference to the male reproductive system.[NCERT Exemplar]
(a) Rete testis(b) Epididymis(c) Vasa efferentia(d) Isthmus
Answer
(d) Isthmus
10) Seminal plasma, the fluid part of semen, is contributed by. [NCERT Exemplar]
(i) Seminal vesicle
(ii) Prostate gland
(iii) Urethra
(iv) Bulbourethral gland
(a) (i) and (ii)(b) (i), (ii) and (iv)(c) (ii), (iii) and (iv)(d) (i) and (iv)
Answer
(b) (i), (ii) and (iv)
11) Which of the following statements is incorrect?
(a) GnRH stimulates secretion of FSH and LH(b) LH stimulates the Leydig cells to secrete androgen(c) FSH acts on the Sertoli cells and stimulates spermiogenesis(d) None of these
Answer
(d) None of these
12) Spermiation is the process of the release of sperms from. [NCERT Exemplar]
(a) Seminiferous tubules(b) Vas deferens(c) Epididymis(d) Prostate gland
Answer
(a) Seminiferous tubules
13) Mature Graafian follicle is generally present in the ovary of a healthy human female around. [NCERT Exemplar]
(a) 5 – 8 day of menstrual cycle(b) 11 – 17 day of menstrual cycle(c) 18 – 23 day of menstrual cycle(d) 24 – 28 day of menstrual cycle
Answer
(b) 11 – 17 day of menstrual cycle
14) Acrosomal reaction of the sperm occurs due to [NCERT Exemplar]
(a) its contact with zona pellucida of the ova(b) reactions within the uterine environment of the female(c) reactions within the epididymal environment of the male(d) androgens produced in the uterus
Answer
(a) its contact with zona pellucida of the ova
15) Which one of the following is not a male accessory gland? [NCERT Exemplar]
(a) Seminal vesicle(b) Ampulla(c) Prostate(d) Bulbourethral gland
Answer
(b) Ampulla
16) The immature male germs cell undergo division to produce sperms by the process of spermatogenesis. Choose the correct one with reference to above. [NCERT Exemplar]
(a) Spermatogonia have 46 chromosomes and always undergo meiotic cell division(b) Primary spermatocytes divide by mitotic cell division(c) Secondary spermatocytes have 23 chromosomes and undergo second meiotic division(d) Spermatozoa are transformed into spermatids
Answer
(c) Secondary spermatocytes have 23 chromosomes and undergo second meiotic division
17) Match between the following representing parts of the sperm and their functions and choose the correct option. [NCERT Exemplar]
(A) Head (i) Enzymes
(B) Middle piece (ii) Sperm motility
(C) Acrosome (iii) Energy
(D) Tail (iv) Genetic material
(a) A-(ii), B-(iv), C-(i), D-(iii)(b) A-(iv), B-(iii), C-(i), D-(ii)(c) A-(iv), B-(i), C-(ii), D-(iii)(d) A-(ii), B-(i), C-(iii), D-(iv)
Answer
(b) A-(iv), B-(iii), C-(i), D-(ii)
18) Number of chromosomes in polar body of human is
(a) 23(b) 46(c) 21(d) 1
Answer
(a) 23
19) Which among the following has 23 chromosomes? [NCERT Exemplar]
(a) Spermatogonia(b) Zygote(c) Secondary oocyte(d) Oogonia
Answer
(c) Secondary oocyte
20) Match the following and choose the correct options [NCERT Exemplar]
Column I Column II
(A) Trophoblast (i) Embedding of blastocyst in the endome trium
(B) Cleavage (ii) Group of cells that would differentiate as embryo
(C) Inner cell mass (iii) Outer layer of blastocyst attached to the endometrium
(D) Implantation (iv) Mitotic division of zygote
(a) A-(ii), B-(i), C-(iii), D-(iv)(b) A-(iii), B-(iv), C-(ii), D-(i)(c) A-(iii), B-(i), C-(ii), D-(iv)(d) A-(ii), B-(iv), C-(iii), D-(i)
Answer
(b) A-(iii), B-(iv), C-(ii), D-(i)
21) Which of the following hormones is not secreted by human placenta? [NCERT Exemplar]
(a) hCG(b) Estrogens(c) Progesterone(d) LH
Answer
(d) LH
22) The vas deferens receives duct from the seminal vesicle and opens into urethra as [NCERT Exemplar]
(a) epididymis(b) ejaculatory duct(c) efferent ductule(d) ureter
Answer
(b) ejaculatory duct
23) Urethral meatus refers to the [NCERT Exemplar]
(a) urinogenital duct(b) opening of vas deferens into urethra(c) external opening of the urinogenital duct(d) muscles surrounding the urinogenial duct
Answer
(c) external opening of the urinogenital duct
24) Morula is a developmental stage [NCERT Exemplar]
(a) between the zygote and blastocyst(b) between the blastocyst and gastrula(c) after the implantation(d) between implantation and parturition
Answer
(a) between the zygote and blastocyst
25) The membranous cover of the ovum at ovulation is [NCERT Exemplar]
(a) corona radiata(b) zona radiata(c) zona pellucida(d) chorion
Answer
(a) corona radiata
26) Identify the odd one from the following. [NCERT Exemplar]
(a) Labia minora(b) Fimbriae(c) Infundibulum(d) Isthmus
Answer
(a) Labia minora
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