NEET Biology MCQs Human Reproduction [Free PDF]

NEET Biology MCQs Human Reproduction

  1. Milk secreted from the cells of alveoli of mammary lobes reaches to the nipple by Lactiferous duct (L),
    Mammary duct (M), mammary Tubule (T) and mammary Ampulla (A) in following order
    a) T A M L b) T M A L c) M T A L d) A T M L
  2. The diagram shows some of the changes in blood hormone concentration which occur during the
    menstrual cycle. Match A,B,C,D,E,F,G and H of graph with the hormones and events given below

Hormones and Events
I. Oestrogen
II. Ovulation
III. Repair of endometrium
IV. Luteinizing hormone
V. Menstruation
VI. Luteal phase
VII. Progesterone
VIII. Ovarian phase
a) I-H, II-G, III-F, IV-E, V-D, VL-C, VII-B, VIII-A b) I-D, II-E, III-F, IV-G, V-H, VI-A, VII-C, VIII-C
c) I-D, II-G, III-F, IV-C, V-H, VI-B, VII-E, VIII-A d) I-A, II-C, III-E, IV-G, V-H, VI-F, VII-D, VIII-B

  1. In frog, gastrulation process involves
    a) Epiboly b) Emboly c) Invagination d) All of theses
  2. Name the most important hormone which causes the uterine contraction strongly
    a) Oxytocin b) Inhibin c) Protection d) Progesterone
  3. Correct sequence of hormone from beginning of menstrual cycle to the end is
    a) FSH, progesterone, LH b) Oestrogen, FSH and progesterone
    c) FSH, oestrogen, progesterone d) Oestrogen, progesterone, FSH
  4. Which of the following is incorrectly matched?
    a) Rabbit – Microlecithal, isolecithal b) Frog – Mesolecithal, telolecithal
    c) Human – Mesolecithal, centrolecithal d) Birds – Macrolecithal, telolecithal
  5. Capacitation takes place in
    a) 12 hrs b) 10 hrs c) 8 hrs d) 6 hrs
  6. Grey crescent is the area
    a) At the point of entry of sperm into ovum
    b) Just opposite to the site of entry of sperm into ovum
    c) At the animal pole

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d) At the vegetal pole

  1. Both corpus luteum and macula lutea are
    a) Found in human ovaries b) A source of hormones
    c) Characterized by a yellow colour d) Contributory in maintaining pregnancy
  2. A cross section at the midpoint of the middle piece of a human sperm will show
    a) Centriole, mitochondria and 9+2 arrangement of
    microtubules
    b) Centriole and mitochondria
    c) mitochondria and 9+2 arrangement of
    microtubules
    d) 9+2 arrangement of microtubules only
  3. Fertilization is
    a) Fusion of male and female gametes b) Fission of male and female gametes
    c) Formation of gametes d) Formation of embryo
  4. Cleavage is
    a) Meiosis of zygote into blastomeres b) Mitosis of zygote into blastomeres
    c) Reductional division of zygote d) Reductional division of embryo
  5. How many phases (stages) are there in menstrual cycle?
    a) 2 b) 6 c) 4 d) 5
  6. Rapid secretion of LH in ovulation causes
    a) Repturing of Graafian follicle b) Releasing of ove
    c) Ovulation d) All of the above
  7. The phase of menstrual cycle in humans that lasts for 7-8 days, is
    a) Follicular phase b) Ovulatory phase c) Luteal phase d) Menstruation
  8. Correct sequence in development is
    a) Fertilization → zygote → cleavage → morula → blastula → gastrula
    b) Fertilization → zygotes → blastula → cleavage → gastrula
    c) Fertilization → cleavage → morula → zygote → blastula
    d) cleavage → zygote → morula → zygote → blastula
  9. Fertilization of ovum takes place in rabbit, man and other placental mammals in
    a) Ovary b) Fallopian tube c) Cervix d) Uterus
  10. Placenta acts as an
    a) Endocrine gland b) Exocrine gland c) Apocrine gland d) Merocrine gland
  11. Extraembryonic membranes, chorion and amnion are formed by
    a) Inner mass cells b) Trophoblast c) Both (a) and (b) d) None of these
  12. Extraembryonic membranes are also called
    a) Foetal membranes b) Embryonic membranes
    c) Outer membranes d) Inner membranes
  13. Capacitation of sperm occurs in
    a) Female genital tract b) Vas deferens c) Vas efferens d) Vagina
  14. Temporary storage of sperms takes place in
    a) Vasa deferentia b) Vasa efferentia c) Epididymis d) Rete testis
  15. The immediate cause of induction of ovulation in female is the large plasma surge of
    a) Progesterone b) Oestriadiol c) LH d) FSH
  16. Which hormone level increases in the luteal phase?
    a) LH b) Progesterone c) Testosterone d) FSH
  17. Process of maturation and development of sperm is called
    a) Oogenesis b) Spermatogenesis c) Spermiogenesis d) None of these
  18. The collective term used for acrosomal chemicals is
    a) Sperm living b) Sperm lysins c) Pectinase d) Cellulase
  19. Which of the following structures are derivatives of the endoderm?
    a) Alimentary canal and respiratory structure b) Muscles and blood

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c) Excretory and reproductive structure d) Skin and nerve cord

  1. Graafian follicle contains
    a) Oogaonial cells b) Corpus luteum
    c) Theca externa and theca interna d) Corpus albicans
  2. If mammalian ovum fails to get fertilized, which one of the following is unlikely?
    a) Corpus luteum will disintegrate b) Oestrogen secretion further decreases
    c) Primary follicle starts developing d) Progesterone secretion rapidly declines
  3. Identify 𝐴,𝐵 and 𝐶 in the following figure a) A-Secondary spermatocytes, B-Primary
    spermatocytes, C-Spermatids
    b) A-Spermatids, B-Primary spermatocytes, C
    Spermatocytes
    c) A-Spermatids, B-Secondary spermatocytes, C
    Primary spermatocytes
    d) A-Primary spermatocytes, B-Secondary
    spermatocytes, C-Spermatids
  4. Which is regarded as urinary bladder of embryo?
    a) Amnion b) Allantois c) Chorion d) Yolk sac
  5. Each ovary is bout 2-4 cm in length connected to the …A… wall by …B… Each ovary is covered by a thin
    epithelium which encloses the ovarian stroma. Stroma is divided into two zones …C… and …D…
    Fill the suitable choices for A to D
    a) A-inner medulla, B-peripheral cortex, C-ligament, D-pelvic wall
    b) A- pelvic, B- ligament, C- peripheral cortex, D- inner medulla
    c) A- pelvic, B-peripheral cortex, C-ligament, D- inner medulla
    d) A-inner medulla, B-peripheral cortex, C-ligament, D-pelvic wall
  6. The female structures that corresponds (homologous) to the scrotum of the male are
    a) Labia Minora b) Labia majora c) Clitoris d) Urethral folds
  7. Which part of ovary in mammals acts as an endocrine gland after ovulation
    a) Graafian follicle b) Stroma c) Germinal epithelium d) Vitelline membrane
  8. According to which theory, ageing is due to accumulation of harmful protein?
    a) Error catastrophe b) Free radicle c) Cross linking d) Somatic mutation
  9. Vasa efferentia are the ductules leading from
    a) Testicular lobules to rete testis b) rete testes to vas deferens
    c) Vas deferens to epididymis d) Epididymis to urethra
  10. Hormone injected by doctors to induce delivery is
    a) Inhibin b) Oxytocin c) Oestrogen d) Prolactin
  11. Which one of the following is the most likely reason of not occurring regular menstruation cycle in
    females?
    a) Fertilization of the ovum b) Maintenance of the hypertrophical endometrial
    lining
    c) Maintenance of high concentration of sex
    hormones in the blood stream
    d) Retention of well-developed cropus luteum
  12. Corpus luteum release
    a) Oestrogen b) Progesterone c) Both (a) and (b) d) Androgen
  13. In the human female, menstruation can be deferred by the administration of

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a) LH only b) Combination of FSH and LH
c) Combination of oestrogen and progesterone d) FSH only

  1. Which of the following embryonic-membrane structure is excretory in function?
    a) Amnion b) Allantois c) Yolk sac d) Vitelline chorion
  2. I. Sperm cells the immediately when they are released from the body and are placed in a petri plate.
    II. Semen contains chemicals that causes females smooth muscles to contract
    a) Statement I is true, but II is false b) Both statements I and II are false
    c) Statement I is false, but II is true d) Both statements are true
  3. The diagram shows the changes that take place in the endometrium during a normal menstruation a) A-ovulation; B-menstruation b) A-ovulation; C-menstruation
    c) C-ovulation; A-menstruation d) B-ovulation; D-menstruation
  4. Sertoli’s cells are found in
    a) Ovaries and secrete progesterone b) Adrenal cortex and secrete adrenaline
    c) Seminiferous tubules and provide nutrition to
    germ cells
    d) Pancreas and secrete cholecystokinin
  5. Ovum receives the sperm in the region of
    a) Animal pole b) Vegetal pole c) Equator d) Pigmented area
  6. hCS (Human Chorionic Somatomammotrophin) previously called
    a) Human placental lactogen (hPL) b) Chorionic thyrotrophin
    c) Chorionic corticotropin d) Relaxin
  7. Women who consumed the drug thalidomide for relief from vomiting during early months of pregnancy
    gave birth to children with
    a) No spleen b) Hare-lip
    c) Extra fingers and toes d) Under developed limbs
  8. Which of the following is not correct for gasrtulation?
    a) Archenteron is formed b) All germinal layers are formed
    c) Morphogenetic movements d) Some blastomeres and blastocoel degenerate
  9. Release of semen by penis into vagina during copulation (coitus) is called
    a) Insemination b) Fertilisaton c) Zygote d) Gametogenesis
  10. Temperature of human testis is
    a) 2-2.5 below body temperature b) 38°C
    c) 33°C d) 2.25 above body temperature
  11. Follicular phase is also called
    a) Secretory phase b) Luteal phase c) Proliferative phase d) Menstrual phase
  12. Name 𝐴,𝐵,𝐶 chormones in the given figure

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a) A-Prostaglandin, B-Oxytocin, C-Oestrogen
b) A- Oestrogen, B-Oxytocin, C- Prostaglandin
c) A- Oestrogen, B- Prostaglandin, C- Oxytocin
d) A-Prostaglandin, B- Oestrogen, C- Oxytocin

  1. The vasa efferentia leave the testis and opens into the …A…, located along the …B… surface. Here A and B
    refers to
    a) A-rete testis; B-epididymis b) A-epididymis; B- rete testis
    c) A-epididymis; B-posterior d) A-epididymis; B-anterior
  2. Where do sperms get matured?
    a) In seminal vesicle b) Seminiferous tubules
    c) In epididymis d) Vasa efferentia
  3. Sertoli cells are also called
    a) Subtentacular cells b) Sperm cells c) Interstitial cells d) Leyding cells
  4. Given below the diagram refers to the TS of testis showing sectional view of a few seminiferous tubules a) A-Sertoli cells, B-Secondary spermatocyte, C-Interstitial cells, D-Sperms
    b) A-Interstitial cells, B-Spermatogonia, C-Sertoli cells, D-Sperms
    c) A-Sertoli cells, B-Spermatozoa, C-Interstitial cells, D-Sperms
    d) A-Sertoli cells, B- Spermatogonia, C-Interstitial cells, D-Sperms
  5. Lobules contain cluster of cells called …A… which secretes …B… . Alveoli opens into mammary tubules,
    which joins to form ….C…
    A, B and C here, refers to
    a) A-milk, B-alveoli, C-mammary duct b) A- mammary duct, B-alveoli, C- milk
    c) A- mammary duct, B- milk, C- alveoli d) A- alveoli, B- milk, C-mammary duct
  6. Female pronucleus is
    a) Cytoplasm of ovum
    b) Nucleus of ovum
    c) Nucleus of quaternary oocyte
    d) Both (b) and (c)
  7. Correct statement with reference to a test tube bay is

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a) The fertilized egg is placed in the womb of the mother where the gastrula period is completed
b) Unfertilized egg is placed in the womb and allowed to grow parthenogenetically
c) A prematurely born baby is reared in an incubator
d) Fertilized egg is taken out and grown in a large test tube

  1. Ovum is
    a) Secondary oocyte b) Primary oocyte c) Tertiary oocyte d) None of these
  2. Sperm lysins contains
    a) Hyaluronidase
    b) Corona penetrating enzyme
    c) Acrosin
    d) All of the above
  3. The seminal plasma along with the sperm is called
    a) Spermatid b) Spermatozoa c) Semen d) All of these
  4. The superior portion of the uterus is
    a) Body b) Cervix c) Fundus d) Infundibulum
  5. hCG (Human Chorionic Gonado trophin) and hPL (Human Placental Lactogen) are released
    a) Before pregnancy
    b) During pregnancy
    c) At parturition
    d) During lactating stage
  6. Process of delivery of the foetus is called
    a) Parturition b) Implantation c) Fertilization d) Lactation
  7. At which stage of the cell cycle, secondary oocyte gets arrested before pregnancy?
    a) Anaphase-I b) Prophase-II c) Metaphase-III d) Telohase-I
  8. Lactation produces milk
    a) Towards the end of pregnancy b) Towards the beginning pregnancy
    c) Towards the beginning of puberty d) Through out the life cycle
  9. Which one of the following statements with regard to embryonic development in humans is correct?
    a) Cleavage divisions bring about considerable increase in the mass of protoplasm
    b) In the second cleavage division, one of the two blastomeres usually divides a little sooner than the
    second
    c) With more cleavage divisions, the resultant blastomeres become larger and larger
    d) Cleavage division results in a hollow ball of cells called morula
  10. Which of the following hormones is not a secretory product of human placenta?
    a) Human chorionic gonadotropin b) Prolactin
    c) Oestrogen d) Progesterone
  11. Hyaluroniadase acts on ground tissue of …A… cells. Corona penetrating enzyme dissolves the …B… and
    zonalysin dissolve the ….C… . Here A, B and C refers to
    a) A-follicle, B-corona radiata, C-zona pellucida
    b) A- zona pellucida, B-corona radiata, C- follicle
    c) A-follicle, B- zona pellucida, C-zona radiata
    d) A- corona radiata, B- zona pellucida, C- follicle
  12. The corpus luteum secretes progesterone which negatively feeds back and inhibits the release of
    a) ABP and ICSH b) LH and ICSH c) LH and FSH d) FSH and TSH
  13. Find out spermatid and Sertoli cell in given diagram

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a) D to E b) E to F c) A to C d) B to E

  1. During embryonic development, endoskeleton and muscle develop from which germinal layer?
    a) Ectoderm b) Endoderm c) Mesoderm d) Blastopore
  2. Eggs which have yolk in the centre surrounded by cytoplasm are called
    a) Centrolecithal b) Homolecithal c) Microlecithal d) Alecithal
  3. Whether a child died after normal birth or died before birth can be confirmed by measuring
    a) Tidal volume of air b) Residual volume of air
    c) The weight of the child d) The dead space air
  4. The movement of spermatozoa, from the epididymal duct and seminal fluid into the ejaculatory duct to
    urethra is under the control of
    a) Parasympathetic and sympathetic nerve
    b) Parasympathetic nerve only
    c) Sometimes sympathetic and sometimes parasympathetic nerves
    d) Sympathetic nerve only
  5. Sertoli’s cell are regulated by the pituitary hormone known as
    a) FSH b) GH c) Prolactin d) LH
  6. Inflammation of the seminiferous tubules could interfere with the ability to
    a) Make semen alkaline b) Secrete testosterone
    c) Produce spermatozoa d) Eliminate urine from the bladder
  7. The gestation period of elephant is about
    a) 11 months b) 15 months c) 22 months d) 32 months
  8. Which one of the following systems is not mesodermal in origin?
    a) Circulatory system b) Muscular system c) Nervous system d) None of the above
  9. In the diagram of section of Graafian follicle, different parts are indicated by alphabets; choose the answer
    in which these alphabets have been correctly matched with the parts they indicate. a) A –Theca externa, B-Theca interna, C-Ovum
    D-Cumulus oophorus, E-Antrum, F-Membrana granulosa
    b) A – Membrana granulosa, B- Theca externa, C- Ovum
    D-Cumulus oophorus, E-Antrum,
    F-Theca interna,
    c) A – Membrana granulosa, B-Theca interna,
    C-Ovum,D-Cumulus oophorus,
    E-Antrum,

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F-Theca externa
d) A –Theca externa, B-Theca interna, C-Ovum
D-Membrana granulosa, E-Antrum,
F-Cumulus oophorus,

  1. Which part of a sperm enters into an ovum during fertilization?
    a) Head b) Tail c) Whole of it d) Middle piece
  2. Graafian follicle after releasing ovum is called
    a) Corpus luteum b) Polar body c) Nuclear body d) Ootid
  3. External genitalia of male are called
    a) Testis b) Penis c) Scrotum d) All of these
  4. Enzyme present in sperm acrosome to dissolve egg membrane is
    a) Sperm lysine b) Ovolysin c) Spermatogenolysin d) Spermatocynin
  5. The second maturation division of the mammalian 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
  6. Luteal phase is also called
    a) Secretory phase b) Bleeding phase
    c) Menses phase d) Ovulatory phase
  7. Spermatogenesis is influenced by
    a) Progesterone b) FSH c) STH d) LTH
  8. How many mature, functional follicles are produced by a female in a lifetime?
    a) About 1 million b) 400 c) 4000 d) 350000
  9. Androgen Binding Protein (ABP) and inhibin are secreted by
    a) Interstitial cells b) Leydig cells
    c) Sertoli cells d) Germinal epithelium
  10. Neubenkern is a part to
    a) Human ovum b) Foetus c) Human sperm d) Graafian follicle
  11. Enlarged end of penis (called the glans penis) is covered by the skin called
    a) Foreskin b) Prepuce c) Both (a) and (b) d) None of the above
  12. Interstitial cells secrets
    a) Androgens b) Oestrogen c) FSH d) Inhibin
  13. Most mammals have their testis sac called scrotal sac which is for
    a) Protection b) Ova formation
    c) Sperm formation d) Temperature regulation
  14. The main function of trophoectoderm in mammalian embryo is
    a) Protection of the developing cells b) Drawing food for the developing cell
    c) Formation of future ectoderm d) Formation of placenta
  15. The correct sequence of male reproductive structures of rabbit through which sperms pass out is
    I. Rete testes
    II. Vasa efferentia
    III. Epididymis
    IV. Vasa deferentia
    a) I, II, III, IV b) II, III, IV, I c) II, III, I, IV d) I, III, II, IV
  16. Label the following diagram which illustrates the fertilization followed by cleavage and the early stages of
    embryonic development. Identify 𝐵,𝐸,𝐹,𝐺 and 𝐻

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a) B-Ovary, E-Morula, F-Blastocyst, G-Cervix, H-Vagina
b) B-Ovary, E- Blastocyst, F- Morula, G-Cervix, H-Vagina
c) B-Ovary, E- Blastocyst, F- Morula, G- Vagina, H- Cervix
d) B-Ovary, E- Blastocyst, F-Gastrula, G- Vagina, H- Cervix

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