MCQ Chapter 3 Human Reproduction Class 12 Biology

Please refer to Human Reproduction MCQ Questions Class 12 Biology below. These MCQ questions for Class 12 Biology with answers have been designed as per the latest NCERT, CBSE books, and syllabus issued for the current academic year. These objective questions for Human Reproduction will help you to prepare for the exams and get more marks.

Human Reproduction MCQ Questions Class 12 Biology

Please see solved MCQ Questions for Human Reproduction in Class 12 Biology. All questions and answers have been prepared by expert faculty of standard 12 based on the latest examination guidelines.

MCQ Questions Class 12 Biology Human Reproduction

Question- The term test-tube baby implies that-
(a) Fertilisation of ovum takes place in the uterus but develops in the test-tube
(b) Fertilisation of ovum takes place in the test-tube and develops in test-tube itself
(c) Fertilisation of ovum takes place in the test-tube but it develops in the uterus
(d) Fertilisation of ovum takes place in the fallopian tube and embryo develops in the uterus

Question- Menstruation cycle occurs –
(a) In all mammals
(b) In eutherian animals
(c) In metatherian animals
(d) In primates

Question- Diaphragms are contraceptive devices used by females. Choose the correct option from the statements given below:
I. They are introduced into the uterus.
II. They are placed to cover the cervical region.
III. They are an example of physical barriers.
IV. They act as spermicidal agents.
(a) I and II (b) I and III
(c) II and III (d) III and IV

Question- Which one of the following statements is correct?
(a) Fertilisation in human takes place in the womb.
(b) Zygote contains haploid number of chromosomes.
(c) Changes in zona pellucida prevent polyspermy.
(d) Primary oocyte inhibits the process of Oogenesis.

Question- Hormonal oral contraceptives help in preventing pregnancy by inhibiting
(a) Ova formation
(b) Fertilisation
(c) Implantation
(d) None of these

Question. Select the option with correct identification of the given contraceptive measure and the hormone essentially present in it.

(a) Second generation IUD-ML-250
(b) Third generation IUD – Progesterone
(c) Subcutaneous implant – Progesterone or Progesterone estrogen combination
(d) Intramuscular depot- Norgesterol

Question- Select the incorrect match.
(a) Seminiferous tubules:
Each lobule contains one to three highly coiled Seminiferous tubules in which sperms are produce. These open into the vasa efferentia through rete testis.
(b) Fallopian tube:
The fallopian tube is about 10-12 cm. long and extend from the periphery of each ovary to the uterus.
(c) Semen:
At least 60% sperms must have normal shape and size and at least 40% of them must show vigorous motility. The seminal plasma along with the sperms constitute the semen.
(d) Secondary ovarian follicle
Primary follicle gets surrounded by more layers of granulosa cells to become secondary follicles. In the secondary ovarian follicle, the theca layer is organized into an outer theca internal and an inner theca externa.

Question- Which one of the following is the incorrect matching of the events occurring during the menstrual cycle?
(a) The tertiary follicle further changes into the mature follicle or Graafian follicle.
(b) Development of corpus luteum in the proliferative phase with increased secretion of progesterone.
(c) The oocyte forms a new membrane called zona pellucida.
(d) The Graafian follicle ruptures to release the secondary oocyte (ovum) from the ovary by the process called ovulation.

Question- The changes that occur in female at the onset of puberty are;
(a) The enlargement of breasts
(b) Beginning of menstrual cycle
(c) Development of pubic hair
(d) All the above

Question- How many ovum are released in a single menstrual cycle?
(a) Two
(b) Numerous
(c) One
(d) Four

Question- Menstrual flow occurs during
(a) First day of menstrual cycle
(b) Last three days of menstrual cycle
(c) Middle of menstrual cycle
(d) First week of menstrual cycle

Question- Menstrual flow is released form the body of a human female through
(a) Uterus
(b) Vagina
(c) Penis
(d) None of these

Question- If the released ovum is fertilised
(a) Menstruation will take place
(b) Menstruation will not take place
(c) Menstruation will take place in the middle of cycle
(d) Menstruation will take place on 20 days of cycle

Question- During follicular phase
(a) Formation of secondary follicle from primary follicle takes place
(b) Formation of tertiary follicle from secondary follicle takes place
(c) Formation of mature Graffian follicle from primary follicle takes place
(d) None of these

Question- Changes in ovary and uterus during menstrual cycle takes place to change in level of
(a) Pituitary and thyroid hormone
(b) Pituitary and androgen hormone
(c) Thyroid and ovarian hormone
(d) Pituitary and ovarian hormone

Question- Gonadotropins are
(a) Pituitary hormones
(b) Thyroid hormones
(c) Ovarian hormones
(d) Corticoid hornones

Question– The gonadotropins LH and FSH attain a peak level during
(a) Initial 3–5 days of menstrual cycle
(b) Initial 5–8 days of menstrual cycle
(c) Middle of menstrual cycle
(d) Last 5 days of menstrual cycle

Question- In the absence of fertilisation which of the following statements is most apt?
A. No menstruation occurs
B. Menstruation take place
C. Corpus luteum degenerates
D. Endometrium disintegrates
E. New cycle initiates
Options –
(a) A is false
(b) A and E are false
(c) A, B and D are true
(d) C, D and E are false

Question- Cease of menstrual cycle in humans is known as
(a) Menarch
(b) Antrum
(c) Menopause
(d) Dipause

Question- Fertilisation takes place in
(a) Uterus
(b) Cervix
(c) Ovary
(d) Fallopian tube

Question- Fertilisation is a process in which
(a) Corpus luteum is formed
(b) Graffian follicle is formed
(c) Sperm fuses with ovum
(d) First menstruation begins

Question- Only one sperm fuses with ovum because
(a) Only one sperm reaches the cervix
(b) Only one sperm reaches the uterus
(c) Contact of one sperm with zona pellucida layer of ovum induce changes in membrane that blocks the entry of additional sperms
(d) Ovum rejects all other sperms after selecting the best one

Question- Second meiotic division of secondary oocyte results in
(a) Two equal size ovum
(b) Two secondary polar bodies
(c) One ovum and one secondary polar body
(d) One ovum and one primary polar body

Question- Nucleus of sperm fuses with nucleus of
(a) Secondary oocyte
(b) Secondary polar body
(c) Ootid
(d) None of these

Question- The duct opening at the tip of the nipple is
(a) oviduct
(b) lactiferous duct
(c) vulva
(d) uterus

Question- The menstrual cycle begins during ___.
(a) childhood
(b) puberty
(c) adulthood
(d) infancy

Question- In human the gestation period is-
(a) 7 months
(b) 9 months
(c) 25 months
(d) 8 months

Question- Which part of the male reproductive system is the place where sperm complete the maturation process?
(a) the prosate gland
(b) the epididymis
(c) the vas deferens
(d) the penis

Question- Termination of gastrulation is hidica”ifed by
(a) Obliteration of blastocoel
(b) Obliteration of archenteron
(c) Closure of blastopore
(d) Closure of neural tube

Question-At menopause there is rise in urinary excretion of
(a) STH
(b) FSH
(c) LTH
(d) MSH

Question- The differentiation of spermotids into spermatozoa is called
(a) Spermatogenesis
(b) Spermiogenesis
(c) Spermatocytogeresis
(d) Spermatids

Question- What in the function of amnions ?
(a) Perspiration
(b) Incretion
(c) Protection from shock
(d) Nutution

Question- When FSH reaches the testes, it causes the production of ___.
(a) secondary sex characteristics
(b) testosterone
(c) LH
(d) sperm cells

Question- Which of the following set in developed from endoderm
(a) Nervous system, unimary bladder, eye
(b) Lira, Panaeas, thymus
(c) Liver, Connective tissue, Least
(d) Thymus, spinal cord, nervous system

Question- Mark the odd one :
(a) Endometrium
(b) Corpus luteum
(c) Acrosome
(d) Graafian follicle

Question- Which part of ovary in mammals acts as an endocrine gland after ovulation?
(a) stroma
(b) germinal epithelium
(c) vitelline membrane
(d) Graafian follicle

Question- Which of the statements is correct?
(a) hCG, hPL and relaxin are produced in women only during pregnancy.
(b) During pregnancy the levels of other hormones like estrogens, progestogens, cortisol, prolactin, thyroxine,etc., are increased severalfn’ds in the maternal blood.
(c) Increased production of these hormones is essential for supporting the fetal growth, metabolic changes in the mother and maintenance of pregnancy.
(d) All of the above

Question- Which one of the following is the correct matching of the events occurring during menstrual cycle? 
(a) Proliferate phase: rapid regeneration of myometrium and maturation of Graafian follicle
(b) Secretory phase: development of corpus luteum and increased secretion of progesterone
(c) Menstruation : breakdown of myometrium and ovum not fertilised
(d) Ovulation : LH and FSH attain peak level and sharp fall in the secretion of progesterone

Question- In a mamm an sperm, spirally arranged mitochondria around the axial filament are present in the region of
(a) Head
(b) Middle piece
(c) Principal piece of tail
(d) End piece of tail

Question- Spermatids are changed into spermatozoa through
(a) Spermiogenesis
(b) Spermiation
(c) Spermatogenesis
(d) Spermatosis.

Question- The structure formed after release of ova from graafian follicles and secretory in nature is
(a) Corpus callosum
(b) Corpus luteum
(c) Corpus albicans
(d) Corpus stratum

Question-  _______ is the hormone responsible for the expression of secondary sex characteristics in human females.
(a) Testosterone
(b) Estrogen
(c) FSH
(d) LH

Question- Tunica albuginea covers
(a) penis
(b) testis
(c) ovule
(d) stroma

Question- Path of sperms from penis to the site of fertilization is :
(a) Oviduct-uterus-Cervix-vagina
(b) Vagina-cervix-uterus-oviduct
(c) Vagina – uterus – oviduct – cervix
(d) Vagina – oviduct – cervix – uterus

Question- Which of the following statements concerning menopause is correct?
(a) Menopause occurs because all of the female’s follicles become hormone-producing corpus luteum at once.
(b) Menopausal symptoms are a result of a decrease in the production of FSH and LH.
(c) The onset of menopause is primarily due to follicle atresia.
(d) Menopause will occur when a female has only about 250,000 follicles left in her ovaries.

Question- Ovuiation takes place by
(a) FSH
(b) LH
(c) Progesterone
(d) Estradiol

Question- Clitoris in mammals is
(a) Homologous to penis
(b) Analogous to penis
(c) Functional penis in female
(d) Non-functional penis in male.

Question- Number of spermatozoan, a single primary spermatocyte produces in spermatogenesis, is
(a) One
(b) Two
(c) Four
(d) Eight

Question- An accessory genital gland is
(a) seminal vesicle
(b) Cowper’s gland
(c) prostate gland
(d) all of these

Question-Corpus luteum produces
(a) Estradiol
(b) Testosterone
(c) Progesterone
(d) None

Question- Which one is primary sex organ?
(a) Scrotum
(b) Penis
(c) Testis
(d) Prostate

Question- Foetal ejection reflex in human female is induced by
(a) release of oxytocin from pituitary
(b) fully developed foetus and placenta
(c) differentiation of mammary glands
(d) pressure exerted by amniotic fluid

Question- A human female has the maximum number of primary oocytes in her ovaries-
(a) At birth
(b) Just prior to puberty
(c) Early in her fertile years
(d) Midway through her fertile years

Question- In which part of the female reproductive anatomy does a fetus develop?
(a) the vagina
(b) the ovary
(c) the uterus
(d) the cervix

Question- Human placenta is derived from
(a) Ectoderm
(b) Trophoblast
(c) Endoderm
(d) Mesoderm

Question- Which of the following signaling molecules is responsible for erectile function ?
(a) Acetylcholine
(b) Nitric oxide
(c) Dopamine
(d) Carbon dioxide

Question-All tissues can be formed from
(a) ectoderm
(b) endoderm
(c) mesoderm
(d) stem cells

Question- Withdrawal of which hormone is the immediate cause of menstruation.
(a) Estrogen
(b) FSH
(c) FSH-RH
(d) Progesterone

Question- Gametes are formed during
(a) spermatogenesis
(b) oogenesis
(c) gametogenesis
(d) spermogenesis

Question-The cavity of gastru la is called
(a) Blastocoel
(b) Coelom
(c) Archenteron
(d) Haemocoel

Question- A gland associated with the male reproductive organs of mammals is
(a) Prostate gland
(b) Phallic gland
(c) Mushroom gland
(d) Conglobate gland

Question- Human testes are positioned in an external sac rather than in the abdominal cavity
(a) to shorten the distance that semen must travel during ejaculation
(b) to shorten the distance that sperm must swim during insemination
(c) so the testes can be kept away from the urinary bladder
(d) so the testes can be kept cooler than the body’s interior

Question- Why can’t a woman get pregnant again during pregnancy?
(a) A woman ovulates during pregnancy, but the oviducts are plugged with protective mucus to prevent sperm from entering.
(b) High levels of HCG in women’s bodies kill sperm.
(c) Awoman can’t have intercourse during pregnancy due to the presence of a protective mucus plug that develops in the cervix.
(d) High levels of estrogen and progesterone, secreted by the corpus luteum or placenta during pregnancy, inhibit the secretion of gonadotropins and prevent ovulation

Question- The fluid that provides energy for the sperm cells comes from the ___.
(a) urethra
(b) bulbourethral glands
(c) prostate gland
(d) seminal vesicles

Question- Estrogen and progesterone are secreted by
(a) placenta
(b) ova
(c) testis
(d) kidney

Question- Placenta in human is
(a) Haemoehorial
(b) Metadiscoidal
(c) Deciduous
(d) AII

Question- The first movements of the foetus and appearance of hair on its head are usually observed during which month of pregnancy?
(a) fourth month
(b) fifth month
(c) sixth month
(d) third month

Question- Kidney and genital organs are formed from
(a) endoderm
(b) ectoderm
(c) mesoderm
(d) ectoderm and mesoderm

Question- The region of the embryo that first develops a close connection with the uterus is called the –
(a) chorion
(b) amnion
(c) placenta
(d) endometrium

Question- The connective tissue called tunica albuginea covers the
(a) liver
(b) kidney
(c) ovary
(d) primary follicle

Question- FSH was administered to a group of rats who had their anterior pituitary glands removed. Compared with the control group of normal rats, which of the following events did NOT take place in the experimental animals?
(a) proliferation of the endometrium
(b) maturation of a Graafian follicle
(c) development of the corpus luteum
(d) build-up of oestrogen in the bloodstream

Question- Cells of Leyding are found in
(a) Liver
(b) Ovary
(c) Semi infamous
(d) Kidney

Question- Leydig cells are found in
(a) testis
(b) ovary
(c) vasa deferens
(d) scrotum

Question- Which of the following events occurs at the same time that menstruation is beginning?
(a) The levels of LH and FSH are “spiking.”
(b) The levels of estrogen and progesterone in the ovarian hormone cycle are on the rise
(c) The corpus luteum is degenerating
(b) Ovulation is occurring