Free Reproduction MCQs with Answers

1,220 Reproduction MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.

Human reproduction covers the male and female reproductive organs, gamete formation, fertilization, implantation and hormonal regulation. The menstrual cycle includes ovarian and uterine changes controlled by pituitary and ovarian hormones, while sexually transmitted diseases are studied through their causes, transmission, symptoms, prevention and effects on fertility.

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1,220 questions · page 29 of 61

  • A. All the three walls
  • B. Perimetrium
  • C. Myometirum
  • D. Endometrium

Explanation: From day 6-28 of the menstrual cycle, the repair and thickening of the endometrial lining occur.

Correct answer: Endometrium
  • A. Serotonin
  • B. Estrogen
  • C. Progesterone
  • D. Insulin

Explanation: After fertilization and the formation of a zygote, the developing embryo starts producing hCG.

Correct answer: Progesterone
  • A. Bleeding phase
  • B. Secretory phase
  • C. Pre-ovulatory phase
  • D. Proliferative phase

Explanation: The secretory phase is part of the menstrual cycle and occurs after ovulation.

Correct answer: Secretory phase
  • A. X
  • B. 2X
  • C. Y
  • D. XY

Explanation: To form a female zygote, the sperm cell must contribute a sex chromosome carrying an X chromosome.

Correct answer: X
  • A. Ovulation
  • B. Implantation
  • C. Conception
  • D. Menstruation

Explanation: After fertilization, the zygote undergoes a series of cell divisions, forming a structure known as a blastocyst.

Correct answer: Implantation
  • A. Interstitial fluid
  • B. Semen
  • C. Amniotic fluid
  • D. Both A and B

Explanation: The fluid secreted by three sets of glands that combines with sperm to form semen includes contributions from the seminal vesicles…

Correct answer: Semen
  • A. Follicular cycle
  • B. Oestrous cycle
  • C. Luteal cycle
  • D. Menstrual cycle

Explanation: In mammals that are seasonal breeders, females are receptive to mating only once a year during a specific period.

Correct answer: Oestrous cycle
  • A. Meiosis
  • B. Fertilization
  • C. Ovulation
  • D. Oogenesis

Explanation: The term that refers to the formation of egg cells (ova) that begins in the developing ovaries of a female fetus is "oogenesis." Oogenesis…

Correct answer: Oogenesis
  • A. Produced by separation of two blastomeres
  • B. Produced asexually
  • C. Produced when embryo is at two cell stage
  • D. Have different genetic makeup

Explanation: Option D is correct as the genetic material of identical twins is always same not different.

Correct answer: Have different genetic makeup
  • A. The lining of the womb wall stays built up
  • B. The lining of the womb wall builds up again
  • C. Another egg is immediately released
  • D. The lining of the womb wall breaks down

Explanation: During the menstrual cycle, if a released egg does not become fertilized, the lining of the womb wall breaks down.

Correct answer: The lining of the womb wall breaks down
  • A. Egg
  • B. Ova
  • C. Ovum
  • D. All of these options are correct

Explanation: Female gametes are most commonly referred to as eggs or ova (singular: ovum).

Correct answer: All of these options are correct
  • A. Penis
  • B. Urethra
  • C. Seminal vesicles
  • D. Ureter

Explanation: The urethra is a duct that serves as a common passage for both urine from the bladder and semen (containing sperm) from the reproductive…

Correct answer: Urethra
  • A. Fallopian tube
  • B. Ovary
  • C. Cervix
  • D. Vagina

Explanation: The structure that carries the egg from the ovary to the uterus is the fallopian tube, also known as the oviduct.

Correct answer: Fallopian tube
  • A. Shoulders broaden
  • B. Breasts enlarge
  • C. Eggs start producing
  • D. Womb grows bigger

Explanation: The correct answer is Shoulders broaden because while some physical changes occur during puberty, broadening of the shoulders is not a…

Correct answer: Shoulders broaden
  • A. Ovulation
  • B. Beginning of menses
  • C. Corpus luteum formation
  • D. Maturation of ovarian follicle

Explanation: Progesterone is the primary hormone in the maintenance of the endometrium lining.

Correct answer: Beginning of menses
  • A. Penis
  • B. Seminal vesicles
  • C. Prostate gland
  • D. Sperm duct

Explanation: The tube that carries sperm from the testes to the urethra is called the vas deferens.

Correct answer: Sperm duct
  • A. 1
  • B. 2
  • C. 3
  • D. 4

Explanation: Each primary spermatocyte undergoes two rounds of meiotic division, known as meiosis I and meiosis II.

Correct answer: 4
  • A. Oogonia
  • B. Spermatogonia
  • C. Ovogonia
  • D. Ovum

Explanation: In the seminiferous tubules of the testes, the repeated division of the germinal epithelium (the cells that give rise to sperm) through a…

Correct answer: Spermatogonia
  • A. Ovulation
  • B. Fertilization
  • C. Menstruation
  • D. Implantation

Explanation: The release of the ovum (egg) from the follicle in human females is called ovulation.

Correct answer: Ovulation
  • A. Sporulation
  • B. Fission
  • C. Apomixis
  • D. All of these options are correct

Explanation: Asexual reproduction is a type of reproduction that involves only one parent, and the offspring produced are genetically identical to the…

Correct answer: All of these options are correct