CBSE Questions for Class 12 Medical Biology Human Reproduction Quiz 12 - MCQExams.com

In man, the two vasa deferentia open into?
  • Urinary bladder
  • Rectum
  • Urethra
  • Penis
Acrosome of sperm is produced by?
  • Golgi body
  • Mitochondria
  • Centrosome
  • Nucleus
Fimbrae are associated with which organ?
  • Fallopian tube
  • Uterus
  • Vagina
  • Ovary
________ produces sperm cells.
  • Seminal vesicle
  • Urinary bladder
  • Testes
  • None of these
Which match(es) is/are incorrect?
A. Spermatogonium -$$46$$ chromosomes
B. Spermatid -$$46$$ chromosomes
C. Sperm - $$23$$ chromosomes
D. Secondary spermatocyte - $$23$$ chromosomes.
  • Only B
  • A, B and C
  • C and D
  • A, B, C and D
Which stage of spermatogenesis the chromosomes are associated with tetrads?
  • Pachytene
  • Leptotene
  • Zygotene
  • Diplotene
Choose the correct statement:
  • After spermiogenesis sperm heads become embedded in the sertoli cells.
  • The release of sperms from the seminiferous tubules is called spermiation.
  • In testis, the immature male germ cells (spermatogonia) produce sperm by spermatogenesis that begin at puberty.
  • More than one option is correct.
First sign of growing foetus that is noticed is?
  • Beating of heart
  • Development of limbs
  • Development of external genitalis
  • Development of eye lashes
Choose the odd one w.r.t. number.
  • Seminal vesicle
  • Prostate gland
  • Cowper's gland
  • Bartholin's gland
Which of the following statements are correct?
(a) Breast differentiate and start producing milk during pregnancy.
(b) Clitoris is present at the posterior junction of Labia Minora.
(c) In absence of implantation, corpus luteum degenerates.
(d) hCG, hPL, relaxin are produced during menstruation cycle.
  • a, b, c
  • b, c, d
  • Only b
  • None of the above
Which part of Epididymis is the site for maturation of sperm?
  • Head Epididymis
  • Body Epididymis
  • Both A & B
  • Tail Epididymis
After some-time of ejaculation, semen liquifies due to presence of profibrinolysin enzyme. It is found in secretion of :-
  • Prostate gland
  • Cowper's gland
  • Seminal vesicle
  • Vagina
Mark the event that indicates the separation of connection of sperm and Sertoli cells 
  • Spermatogenesis
  • Spermiogenesis
  • Spermiotelosis
  • Spermiation
Secretion of which gland destroy the acidity of vagina.
  • Seminal vesicle
  • Prostate gland
  • Bartholin gland
  • Bulbourethral gland
Which of the following happens after menopause 
  • Rise in level of estrogen
  • Rise in level of FSH
  • Rise in level of progesterone
  • More than one ption is correct
What is the life period of corpus luteum at the time of pregnancy
  • 4 days
  • 10 days
  • 14 days
  • 28 days
Accessory glands in male reproductive system.
  • Corpus leuteum
  • Epididymis
  • Prostate gland
  • Scrotum
Identify the cell labelled 'A' in the T.S. of testis:
1700302_e0f85e846ac14453bc4102794b2c6bed.png
  • Leydig cell
  • Basement membrane
  • Sperm
  • Sertoli cell
State whether the following statements are True or False. If false, correct the statement: 
The eggs of fish are covered by hard shells for protection.
  • True
  • False
Along the path of vas deferens, glands like the prostate and the seminal vesicles add their secretions for the nutrition and easier transport of the sperms.
  • True
  • False
Menstruation lasts for about ten to fifteen days.
  • True
  • False
Thick and spongy lining of uterus is required for nourishing the embryo if fertilization had taken place.
  • True
  • False
Given below are events that lead to pregnancy and development of embryo.
(i) Fertilization of egg
(ii) Maturation of egg
(iii) Release of egg
(iv) Embedding of zygote in thickened uterine wall.
Which of the following options gives the correct order of sequence in which they occur?
  • i, ii, iii, iv
  • ii, i, iii, iv
  • i, iv, ii, iii
  • ii, iii, i, iv
State whether the following statements are True or False. If false, correct the statement: 
In adult human females, a single mature egg is released into an oviduct every month.
  • True
  • False
State whether the following statements are True or False. If false, correct the statement: 
Human egg has a head, middle piece and tail. 
  • True
  • False
Eggs are produced by which organ? 
  • Ovary
  • Fallopian tubes
  • Uterus
  • Cervix
Fertilisation takes place in which part of the female reproductive system? 
  • Ovary
  • Fallopian tubes
  • Uterus
  • Cervix
In sexual reproduction, a male and female gametes fuse to form
  • Embryo
  • Spore
  • Zygote
  • Flower
The elastic tissue connecting the cauda epididymis to the scrotal sac is ____.
  • Gubernaculum
  • Tendinous cord
  • Scrotal ligament
  • Caput epididymis
The seminiferous tubules of the testis are lined by the germinal epithelium consisting of 
  • Cells of Sertoli
  • Spermatocytes
  • Spermatids
  • All of the above
$$2n=16$$ in a primary spermatocyte, which is in metaphase of first meiotic division. What shall be the total number of chromatids in each of the secondary spermatocytes?
  • 32
  • 8
  • 16
  • 24
Name the hormone that has no role in menstruation.
  • LH
  • FSH
  • GH
  • TSH
Sequence of hormones during menstrual cycle is 
  • Oestrogen, progesterone and FSH
  • Progesterone, oestrogen and FSH
  • FSH, oestrogen and progesterone
  • FSH, progesterone and oestrogen
About which day in a normal human menstrual cycle does rapid secretion of LH (popularly called as LH-surge) normally occurs?
  • 5$$^{th}$$ day
  • 11$$^{th}$$ day
  • 14$$^{th}$$ day
  • 20$$^{th}$$ day
What is the female counterpart of prostate gland in the human male?
  • Bartholin's gland
  • Uterus
  • Clitoris
  • None of the above
How many secondary spermatocytes will be required to form 400 spermatozoa?
  • 100
  • 200
  • 40
  • 400
List 1 contains terms and List 2 contains definitions. Match them correctly and choose the right answer.
List IList II
AParturition1Attachment of zygote to endometrium
BGestation2Release of egg from Graafian follicle
COvulation3Delivery of baby from uterus
DImplantation4Duration between pregnancy and birth
EConception5Formation of zygote by fusion of the egg and sperm
6Stoppage of ovulation and menstruation
  • A- 3, B- 4, C- 2, D- 1, E- 5
  • A- 4, B- 3, C- 2, D- 1, E- 5
  • A- 3, B- 4, C- 2, D- 5, E- 1
  • A- 3, B- 4, C- 1, D- 2, E- 5
If after ovulation no pregnancy results, the corpus luteum 
  • Is maintained due to the presence of progesterone
  • Degenerates in a short time
  • Starts secreting FSH and LH
  • Produces hormones oxytocin and relaxin
The Wolffian duct gives rise to 
  • Scrotum
  • Labia majora
  • Both A and B
  • Epididymis
Cleavage was first observed by 
  • Swammerdam
  • Spallanzani
  • F.R. Lillie
  • Leeuwenhoek
How many ova and sperms would be produced from 100 secondary oocytes and 100 secondary spermatocytes during gametogenesis in human?
  • 100 ova, 100 sperms
  • 100 ova, 200 sperms
  • 50 ova, 100 sperms
  • 200 ova, 200 sperms
Assertion : In human male, there are perianal glands near the anus.

Reason : Perianal glands secretes sex-attractant pheromone which initiates sexual desire in human female.
  • Both Assertion and Reason are true and Reason is a correct explanation of Assertion
  • Both Assertion and Reason are true but Reason is not a correct explanation of Assertion
  • Assertion is true but Reason is false
  • Both Assertion and Reason are false
  • Assertion is false but reason is true.
Assertion : Fallopian funnel of oviduct is with finger like fimbriae.

Reason : Graafian follicle of ovary is with secondary oocyte hanging in cavity called antrum.
  • Both Assertion and Reason are true and Reason is a correct explanation of Assertion
  • Both Assertion and Reason are true but Reason is not a correct explanation of Assertion
  • Assertion is true but Reason is false
  • Both Assertion and Reason are false
  • Assertion is false but reason is true.
Embryologists can presume the future organs of the embryo in 
  • Blastula
  • Early gastrula
  • Morula
  • Post gastrula
The human embryo is about one inch in length after
  • 2 weeks
  • 4 weeks
  • 6 weeks
  • 8 weeks
During embryonic development the establishment of polarity along anterior / posterior, dorsal / ventral or medial / lateral axis is called 
  • Anamorphosis
  • Organizer phenomena
  • Pattern formation
  • Axis formation
If the nuclei from an 8 celled stage of an embryo are transplanted into enucleated eggs, which of the following events is likely to occur?
  • Formation of viable embryo in the recipient eggs.
  • Donor nuclei die in the new environment.
  • Cleavage occurs but is arrested after some time.
  • Recipient egg dies.
The concept that organiser is essential for embryonic development was given by
  • J. Axelrod
  • C. Landsteiner
  • H. Spemann
  • I.P. Pavlov
Which one of the following is correct?
  • Rods and cones - auditory receptors
  • Haemoglobin - muscle contraction
  • Sertoli cells - sperm nutrition
  • None of the above
Progesterone, ovulation, 28 days, puberty, menarche, 45-50 years, menopause, fallopian tube, 13$$^{th}$$ or 14$$^{th}$$ days
Fill in the blanks using the given words.
Menstrual cycle is a series of cyclic changes that occur in the reproductive system of human females with a periodicity of about ..........(1) ...........
The cycle begins with ..........(2)...........
The first menstruation is called as ..........(3) ...........
It stops between age of .........(4) ............
Stoppage of menstruation permanently is called as ........(5) .............
At about the middle of the menstrual cycle on .........( ) ..........., the growing follicle bursts and mature ovum is released from the ovary under the influence of higher levels of estrogen and LH.
The phenomenon is called as .........(7)..............
The empty follicle grows into corpus luteum that secretes hormone ........... (8) ..........
The released ovum is drawn into ..................(9) ...................... with the help of inward lashing movements of its internal cilia.
It rests for 1-2 days in the ampulla.
The period is called as fertility period.
Pregnancy can occur only during this phase.
  • (1)- 28 days, (2)- puberty, (3)- menarche, (4)- 45-50 years, (5)- menopause, (6)- 13$$^{th}$$ or 14$$^{th}$$ days, (7)- ovulation, (8)- progesterone, (9)- fallopian tube
  • (1)- 28 days, (2)- puberty, (3)- menarche, (4)- 45-50 years, (5)- menopause, (6)- 13$$^{th}$$ or 14$$^{th}$$ days, (7)- fallopian tube, (8)- progesterone, (9)- ovulation
  • (1)- 28 days, (2)- puberty, (3)- menarche, (4)- 13$$^{th}$$ or 14$$^{th}$$ days, (5)- menopause, (6)- 45-50 years, (7)- fallopian tube, (8)- progesterone, (9)- ovulation
  • (1)- 28 days, (2)- puberty, (3)- menopause, (4)- 13$$^{th}$$ or 14$$^{th}$$ days, (5)- menarche, (6)- 45-50 years, (7)- fallopian tube, (8)- progesterone, (9)- ovulation
0:0:1


Answered Not Answered Not Visited Correct : 0 Incorrect : 0

Practice Class 12 Medical Biology Quiz Questions and Answers