MCQ Questions Chapter 3 Human Reproduction Class 12 Biology

Please refer to MCQ Questions Chapter 3 Human Reproduction Class 12 Biology with answers provided below. These multiple-choice questions have been developed based on the latest NCERT book for class 12 Biology issued for the current academic year. We have provided MCQ Questions for Class 12 Biology for all chapters on our website. Students should learn the objective based questions for Chapter 3 Human Reproduction in Class 12 Biology provided below to get more marks in exams.

Chapter 3 Human Reproduction MCQ Questions

Please refer to the following Chapter 3 Human Reproduction MCQ Questions Class 12 Biology with solutions for all important topics in the chapter.

MCQ Questions Answers for Chapter 3 Human Reproduction Class 12 Biology

Question- The embryogenesis is the process of the development of an embryo from the zygote. During this process zygote undergoes-
(a) Meiosis
(b) Cleavage only
(c) Cell differentiation only
(d) Both cleavage and cell differentiation

Question- If Cowper’s glands are removed, it will effect
(a) Erection of penis
(b) Sperms
(c) Sex recognition
(d) Sexual behavior

Question- Pregnancy begins with implantation of-
(a) Embryo
(b) Fertilised ovum
(c) Blastopore
(d) Blastocyst

Question- With the disintegration of corpus luteum, a decrease in the secretion of ————- hormone occurs.
(a) LH
(b) Progesterone
(c) LTH
(d) FSH

Question- In humans, placenta is derived from
(a) Yolk sac
(b) Amnion
(c) Allantois
(d) Chorion

Question- A condition in which one or both of the testes fail to descend into scrotum is called :-
(a) Impotency
(b) Castration
(c) Synorchidism
(d) Cryptorchidism

Question- Parturition is :
(a) A complex neuroendocrine mechanism
(b) A neuro exocrine mechanism
(c) A physio-chemical mechanism
(d) None of the above

Question- The chemical method of contraception includes
(a) Jellies only
(b) Creams and foams only
(c) Spermicides
(d) All of the above

Question- Extrusion of second polar body from egg nucleus occurs:
(a) After the entry of sperm, before the completion of fertilization
(b) After the completion of fertilisation
(c) Before entry of sperm
(d) Has no relation to sperm entry.

Question- The birth control measure that is related to males is
(a) IUDs
(b) Tubectomy
(c) Vasectomy
(d) None of these

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- In human females menstruation is repeated at an average interval of
(a) 10–15 days
(b) 2–3 months
(c) 29 days
(d) 5–7 days

Question- In normal human female ovum is released 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 a result of
(a) Break down of endometrial lining of Graffian follicle and blood vessel
(b) Break down of endometrial lining of secondary follicle and blood vessel
(c) Break down of endometrial lining of uterus and blood vessel
(d) Break down of zora pellucida of tertiary follicle and blood vessel

Question- Lack of menstrual cycle may be due to
(a) Pregnancy
(b) Stress
(c) Poor health
(d) All of these

Question- In each menstrual cycle, menstrual phase is followed by
(a) Luteal phase
(b) Follicular phase
(c) Next cycle
(d) Secretary phase

Question- Endometrium of uterus regenerates through proliferation in whichphase of menstrual cycle
(a) Luteal phase
(b) Follicular phase
(c) Next cycle
(d) Secretary phase

Question- Follicular phase is also known as
(a) Menstruation
(b) Secondary phase
(c) Proliferative phase
(d) Luteal phase

Question- Gonadotropins stimulate
(a) Follicular development and decrease in estrogen level
(b) Corpus luteum formation and decrease in estrogen level
(c) Follicular development and increase in estrogen level
(d) Corpus luteum formation and increase in estrogen level

Question- The increase of which hormone is mainly responsible for ovulation?
(a) FSH
(b) TSH
(c) GH
(d) LH

Question- In human beings menstrual cycle ceases at the age of
(a) 5–10 years
(b) 16–18 years
(c) 30–35 years
(d) Around 50 years

Question- The sperm released during insemination travels through the female genital tract upto
(a) Uterus
(b) Ampullary isthmic junction
(c) Cervix
(d) Vagina

Question- Which of the following is not true?
(a) Fertilisation can occur only if the ovum and sperms are transported simultaneously to the ampullar–isthmic junction.
(b) All copulation can lead to fertilisation and pregnancy
(c) During copulation (coitus) semen is released by the penis into the vagina
(d) The ovum released by the ovary is transported to the ampullar–isthmic junction where fertilisation take place

Question- During fertilisation sperm comes in contact with which part of the ovum
(a) Granulosa layer
(b) Zona pellucida
(c) Ovum cytoplasm
(d) None of these

Question- Secretion of which part of sperm helps the sperm entry in the cytoplasm of ovum
(a) Tail
(b) Neck
(c) Middle piece
(d) Acrosome

Question- The ploidy of secondary oocyte and ootid respectively is
(a) 2n, n
(b) Both 2n
(c) Both n
(d) n, 2n

Question- Morphogenesis starts with
(a) Morulation
(b) Blastulation
(c) GastrtHation
(d) Neurulation

Question. During fertilization which part of sperm enters the secondary oocyte?
(a) Tail
(b) Head
(c) Middle part
(d) (a) and (c) both

Question.Which hormones are not produced by placenta?
(a) hCG
(b) hPL
(c) Estrogens
(d) Relaxin

Question. During delivery which gland sends signals for the release of Oxytocin?
(a) Posterior pituitary gland
(b) Anterior pituitary gland
(c) Hypothalamus
(d) None of the above

Question. The breakdown of endometrium is characteristic of:-
(a) Proliferative phase
(b) luteal phase
(c) Ovulatory phase
(d) Menstrual phase

Question- At what point in development does an embryo become a fetus?
(a) by the twenty-eighth week
(b) by the eighth week
(c) by the thirty-ninth week
(d) by the nineteenth week

Question- ‘Extrusion of second polar body from eigg nucleus occurs
(a) After entry of sperm but defore fertilization
(b) After fertilization
(c) Before entry of sperm
(d) No relation with sperm entry

Question- The second maturation division of the mamm an ovum occurs 
(a) Shortly after ovulation before the ovum makes entry into the Fallopian tube
(b) Until after the ovum has been penetrated by a sperm
(c) Until the nucleus of the sperm has fused with that of the ovum
(d) In the Graafian follicle following the first maturation division

Question- The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is
(a) spermatogonia – spermatocyte – spermatid – sperms
(b) spermatid – spermatocyte – spermatogonia – sperms
(c) spermatogonia – spermatid – spermatocyte – sperms
(d) spermatocyte – spermatogonia – spermatid – sperms

Question- During pregnancy one of the following is excreted
(a) Progesterone
(b) -LH
(c) PSH
(d) HCG

Question- Human egg in
(a) Microlecithal
(b) Merolecithal
(c) Macrolecithal
(d) Alecithal

Question- Stroma is present in the T.S. of
(a) penis
(b) testis
(c) ovary
(d) liver

Question- Which of the following events is correctly matched with the time period in a normal menstrual cycle?
(a) Release of egg — 5th day
(b) Endometrium regenerates — 5-10 days
(c) Rise in progesterone level —1-15 days
(d) Endometrium secretes nutrients for implantation —11 -18 days

Question- Which of the following groups of organ develop from mesoderm
(a) Nervous system, epidermis, internal ear
(b) Thyroid, pancreas kidney
(c) Pineal gland, stomoedarum
(d) Heat, spleen, ganads

Question- Corpus spongiosum muscle is present in
(a) testis
(b) ovary
(c) penis
(d) epididymis

Question- Foetal membranes provide
(a) Protection of embryo
(b) Nutrition of embryo
(c) Respiration of embryo
(d) All he above

Question- Archentetdn is the future
(a) Stomodeum
(b) Proctodeum
(c) Cavity of alimentary canal
(d) Coelom

Question- Females stop releasing eggs and hormone secretions slow down during ___.
(a) puberty
(b) fertilization
(c) menopause
(d) ovulation

Question- Parturition means
(a) Separation of blastocysts
(b) Development of embryo
(c) Process of birth
(d) Contraction of uterus

Question- Sertoli cells are regulated by the pituitary hormone
(a) FSH
(b) GH
(c) Prolactin
(d) LH

Question- When released from ovary, human egg contains
(a) Only Y chromosome
(b) 2 X chromosome
(c) 1 X chromosome
(d) XY chromosomes

Question- The remains of the placenta and embryonic membranes that are expelled during birth are called the _____
(a) cervix
(b) umbilical cord
(c) amniotic fluid
(d) afterbirth

Question- Which of the following develops from endoderm?
(a) Brain
(b) Kidneys
(c) Oonads
(d) Lungs

Question- In the menstrual cycle, on what day does the flow stage begin?
(a) day 5
(b) day1 
(c) day 28
(d) day 14

Question- Which of the germ layers in best abociated with the development of Leant ?
(a) Ectoderm
(b) Endoderm
(c) Mgoderm
(d) All of these

Question- In male body, the production of oestrogen takes place at
(a) Leydig’s cell, adrenal cortex & graafian follicle
(b) liver, adrenal cortex & renal medulla
(c) adrenal cortex, secondary oocyte & liver
(d) liver, sustentacular cell & adrenal cortex.

Question- Failure of descending testes into the scrotum is known as
(a) Paedogenesis
(b) Castration
(c) Cryptorchidism
(d) Impotency

Question- Fertilizing protein is found on
(a) acrosome
(b) sperm head
(c) sperm surface
(d) egg membrane

Question- At which stage of follicle maturation does ovulation occur, transforming the follicle into the corpus luteum?
(a) tertiary follicle
(b) primary follicle
(c) secondary follicle
(d) quaternary follicle

Question- In which animal, the testes are abdominal during embryonic stages but migrate to scrotum just before birth where they remain throughout life
(a) Elephants
(b) Men
(c) Rats
(d) Whales

Question- In human adult females oxytocin
(a) stimulates pituitary to secrete vasopressin
(b) causes strong uterine contractions during parturition
(c) is secreted by anterior pituitary
(d) stimulates growth of mammary glands

Question- Sperms of mammals depend for movement on
(a) Only tail
(b) Middle piece
(c) Head only
(d) Tail & middle piece

Question- If mamm an ovum fails to get fertilized, which one ofthe following is unlikely ?
(a) corpus luteum will disintegrate
(b) progesterone secretion rapidly declines
(c) estrogen secretion further decreases
(d) primary follicle starts developing

Question- Haemopoitic in embryo is
(a) Amnion
(b) Chorion
(c) Allantois
(d) Yplksac

Question- Which germinal layer develops first during embryonic development
(a) Endoderm
(b) Mesoderm
(c) Ectoderm
(d) Both A and B

Question- Embryonic urinary bladder Is
(a) Amnion
(b) Chorion
(c) Allantois
(d) AII

Question- Notochord, skeletal system and dermis of skin are derived from
(a) Ectoderm
(b) Endoderm
(c) Mesoderm
(d) All the above

Question- Which of the following events occurs within the uterine tubes?
(a) oogenesis
(b) fertilization
(c) embryonic development
(d) A, B and C are all correct

Question- ______ keeps the embryo attached to the wall of the uterus.
(a) The vagina
(b) The blastula
(c) The fallopian tube
(d) The umbilical cord

Question- Which of these is the name for human embryonic development?
(a) a placenta
(b) a navel
(c) a blastocyst
(d) a contraction

Question-Theprocess of releasing the ripe female gamete from the ovary is called
(a) Parturition
(b) Ovuiation
(c) Fertilisation
(d) Implantation

Question- Which of these is NOT a gland that contributes to the production of sperm?
(a) thyroid gland
(b) bulbourethral gland
(c) seminal vesicles
(d) prostate gland

Question- Fertilization in the female reproductive tract most often takes place in the
(a) ovary
(b) upper third of the oviduct
(c) lower third of the oviduct
(d) uterus

Question- ______ is the process by which a baby is pushed out of the uterus and passes out of the mother’s body
(a) Expulsion
(b) Dilation
(c) Birth
(d) Labor

Question- Which of the following does NOT occur during implantation?
(a) The embryo secretes enzymes that digest away part of the endometrium.
(b) The embryo is drawn into the endometrium and becomes surrounded by it.
(c) The embryo forms finger-like projections that burrow into the uterine wall.
(d) The embryo develops into a hollow ball with a fluid-filled interior. 

Question- A change in the amount of yolk and its distribution in the egg will affect
(a) pattern of cleavage
(b) number of blastomeres produced
(c) fertilization
(d) formation of zygote

Question- In human beings
(a) Chorion and Amnionar& well-developed
(b) Allantois and Yolk sap are less developed
(c) Yolk cell does not have yolk
(d) All the above

Question- Below urinary bladder is situated
(a) seminal vesicle
(b) epididymis
(c) prostate gland
(d) prepuce

Question- Seminal plasma in humans is rich in
(a) fructose and calcium but has no enzymes
(b) glucose and certain enzymes but has no calcium
(c) fructose and certain enzymes but poor in calcium
(d) fructose, calcium and certain enzymes

Question- In the human female, menstruation can be deferred by the administration of
(a) combination of FSH and LH
(b) combination of estrogen and progesterone
(c) FSH only
(d) LH only

Question- The temperature of scrotal pouch remains normally at
(a) 4° F less than normal body temp
(b) 6° F higher than normal body temp
(c) 5° F higher than normal body temp
(d) 7° F less than normal body temp

Question- The mammalian egg shows_______ cleavage
(a) Holoblastic equal
(b) Holdsantic unequal
(c) Meblastic
(d) superficial

Question- The development of human embryo completes is-
(a) 180 days
(b) 300 days
(c) 250 days
(d) 266 days

Question- In humans, at the end of the first meiotic division, the male germ cells differentiate into the
(a) spermatids
(b) spermatozonia
(c) primary spermatocytes
(d) secondary spermatocytes

Question- Abdominal passage which connects abdominal cavity with the scrotal sac in mammals is known as
(a) Spermatic canal
(b) Neurenteric canal
(c) Inguinal canal
(d) Haversian canal

Question- Gonads are derived from
(a) Mesoderm
(b) Endoderm
(c) Ectoderm
(d) Mesoderm & Endoderm

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