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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Read the Reproduction notesFree MDCAT chapter notes with key terms1,220 questions · page 18 of 61
- A. Lipid
- B. Carbohydrate
- C. Mineral
- D. Protein
Explanation: Phytochrome is a chromoprotein. It acts as a photoreceptor in plants. It is sensitive to light in the red and far-red regions.
Correct answer: Protein- A. Long-day plants
- B. Short-day plants Short-Short-day plantsantsday plantsants
- C. Neutral-day plants
- D. None of these
Explanation: It has been found that red light inhibits lowering the short-day plants but promotes lowering in long-day plants, under conditions during…
Correct answer: Long-day plants- A. Leaves
- B. Flower
- C. Stem
- D. Roots
Explanation: Florigen is a systemic signal that initiates flowering in plants. It is synthesized in leaves and transported to the shoot apical meristem…
Correct answer: Leaves- A. Forming a spore
- B. Budding
- C. Regeneration
- D. Fission
Explanation: In budding, a new individual develops as an outgrowth or bud on the parent organism.
Correct answer: Budding- A. Parthenogenesis
- B. Parthenocarpy
- C. Regeneration
- D. Budding
Explanation: Reproduction of an egg without fertilization by sperm is termed as Parthenogenesis.
Correct answer: Parthenogenesis- A. Budding
- B. Cloning
- C. Parthenocarpy
- D. Fission
Explanation: Organisms produced from a single cell by subculturing (cloning) are called clones.
Correct answer: Cloning347. Fraternal twins:
- A. Can be only two boys
- B. Can be only two girls
- C. Cannot be one boy and one girl
- D. Can be one boy and one girl
Explanation: In some cases, more than one egg is produced by the female, and all these eggs are independently fertilized forming two or more zygotes.
Correct answer: Can be one boy and one girl- A. Variation
- B. Chances of survival
- C. Genetic monotony
- D. All (A), (B) and (C)
Explanation: Sexual reproduction is important to avoid genetic monotony, as it introduces variability in offspring due to the combination of genetic…
Correct answer: Genetic monotony- A. Primary spermatocyte
- B. Spermatogonium
- C. Sertoli cell
- D. Secondary spermatocyte
Explanation: Secondary spermatocyte cell type is haploid and is formed through the first meiotic division of a primary spermatocyte.
Correct answer: Secondary spermatocyte- A. Mitosis only
- B. Meiosis only
- C. Both mitosis and meiosis
- D. All (A), (B) and (C) are incorrect
Explanation: Both spermatogenesis and oogenesis involve both mitosis and meiosis. Mitosis is responsible for the production of precursor cells…
Correct answer: Both mitosis and meiosis- A. Primary spermatocyte
- B. Spermatid
- C. Secondary spermatocyte
- D. Spermatogonium
Explanation: After meiosis, the primary spermatocyte differentiates into two secondary spermatocytes.
Correct answer: Spermatid- A. Oviparous
- B. Viviparous
- C. Dioecious
- D. Neuter
Explanation: In terrestrial conditions, fertilization is internal. Sperms are lodged in the female body where fertilization occurs.
Correct answer: Oviparous- A. External
- B. Internal
- C. Self
- D. None of these
Explanation: In terrestrial conditions, internal fertilization is more common. Internal fertilization involves the union of male and female gametes…
Correct answer: Internal- A. Ureter
- B. Vas deferens
- C. Urinary bladder
- D. Urethra
Explanation: The urethra is a duct that serves both the reproductive and excretory systems in males.
Correct answer: Urethra- A. A pair of testes
- B. Seminiferous tubules
- C. Male copulatory organ
- D. Both A and C
Explanation: The external male genitalia include the following structures:Penis: The penis is the external organ of the male reproductive system.
Correct answer: Both A and C- A. 500, 20
- B. 300, 40
- C. 800, 20
- D. 500, 10
Explanation: The human testes contain approximately 800 seminiferous tubules, producing around 1,500 sperm per second, totaling around 20-100 million…
Correct answer: 800, 20- A. Interstitial fluid
- B. Semen
- C. Amniotic fluid
- D. Both (A) and (B)
Explanation: Semen is a mixture of sperm and fluids from various glands. These glands include the seminal vesicles, prostate gland, and bulbourethral…
Correct answer: Semen- A. 30,000
- B. 200,000
- C. 300,000
- D. 20,000
Explanation: Each ovary is enclosed in a tough protective capsule and contains many follicles.
Correct answer: 200,000- A. Ovary
- B. Uterus
- C. Oviduct (Fallopian tube)
- D. Cervix
Explanation: Fertilization of human eggs most often takes place in the oviduct, also known as the Fallopian tube.
Correct answer: Oviduct (Fallopian tube)360. In human female only one ovum is usually discharged from the ovary at one time and it is called:
- A. Parturition
- B. Menstruation
- C. Ovulation
- D. Implantation
Explanation: Ovulation is the release of a mature egg (ovum) from an ovary. It usually occurs around the middle of the menstrual cycle, roughly two…
Correct answer: Ovulation