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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- A. Release of secondary oocyte
- B. LH surge
- C. Decrease in estrogen
- D. Full development of Graafian follicle
Explanation: The correct answer is a decrease in estroge . During ovulation, estrigen levels peak to promote the LH surge, which is necessary for the…
Correct answer: Decrease in estrogen- A. Ovulation
- B. Menstruation
- C. Menopause
- D. Fertilization
Explanation: When the level of progesterone declines, it signals the beginning of the menstrual phase of the menstrual cycle.
Correct answer: Menstruation- A. Aphids
- B. Mosquito
- C. Butterfly
- D. Honey bee
Explanation: The only organism in the list that has haploid males is the honeybee. This is because honeybees have a unique sex determination system…
Correct answer: Honey bee124. Asexual reproduction requires only a single parental organism which gives rise to offspring by?
- A. Meiotic cell division
- B. Mitotic cell division
- C. Both A and B
- D. None of these
Explanation: Meiosis is the type of cell division in which the egg and sperm each have 23 chromosomes.
Correct answer: Mitotic cell division- A. n
- B. 2n
- C. 3n
- D. 4n
Explanation: The number of chromosomes in gametes is haploid, meaning they have half the number of chromosomes as the somatic cells (diploid cells) of…
Correct answer: n- A. Male gametocytes are called spermatocyte
- B. Gametocytes divide by meiosis into other gametocytes
- C. Female gametocytes are called oocytes
- D. They are eukaryotic somatic cells
Explanation: Gametocytes are haploid cells, which means they have half the number of chromosomes as somatic cells.
Correct answer: They are eukaryotic somatic cells- A. Zygote
- B. Egg
- C. Embryo
- D. Fetus
Explanation: Option A is correct since the zygote is the species formed as a result of the fusion of two haploid nuclei (the sperm and the ovum).
Correct answer: Zygote- A. Male gametocytes are called spermatocytes.
- B. Gametocytes can divide by mitosis into other gametocytes.
- C. Female gametocytes are called oocytes.
- D. They are eukaryotic somatic cells.
Explanation: Gametocytes are eukaryotic germ cells and not somatic cells. Somatic cells do not undergo meiosis however, the gametocytes can undergo…
Correct answer: They are eukaryotic somatic cells.- A. The fertile period
- B. Adulthood
- C. Pregnancy
- D. Puberty
Explanation: Puberty is a stage of development during which sexual maturation occurs, and the reproductive organs begin to become functional.
Correct answer: Puberty- A. Uterus
- B. Ovaries
- C. Eggs
- D. Fallopian tube
Explanation: Germ cells are cells that create reproductive cells called gametes. Germ cells are located only in the gonads.
Correct answer: Ovaries- A. Asexual reproduction which results in genetically dissimilar offspring
- B. Asexual reproductlon whlch results In genetically identical offspring
- C. Sexual reproduction which results in genetically dissimilar offspring
- D. Sexual reproduction which results in genetically identical offspring
Explanation: A type of reproduction in which gametes join to form a new offspring is called sexual reproduction.
Correct answer: Sexual reproduction which results in genetically dissimilar offspring- A. Genetically Modified
- B. Transgenic Animals
- C. Transgenic Bacteria
- D. Clones
Explanation: Cells/individuals which are genetically identical to each other are called clones.
Correct answer: Clones- A. Ants
- B. Honeybee
- C. Baboon
- D. Parrots
Explanation: The worker bee and the queen bee are both female but only the queen bee can reproduce. All drones are male.
Correct answer: Honeybee- A. Identical to the parent
- B. Identical if mutations do not occur
- C. Non-identical to the parent
- D. None of these
Explanation: In asexual reproduction, offspring are typically genetically identical to the parent if mutations do not occur.So option B is correct.
Correct answer: Identical if mutations do not occur- A. Meiosis
- B. Mitosis
- C. Both a and b
- D. None of these
Explanation: Asexual reproduction occurs by cell division during mitosis to produce two or more genetically identical offspring.
Correct answer: Mitosis- A. Segregation
- B. Non disjunction
- C. Fertilization
- D. Mitosis
Explanation: The process during which the male and female gametes (sperm and egg) combine is called fertilization.
Correct answer: Fertilization- A. Fertilization
- B. Implantation
- C. Development
- D. Growth
Explanation: Fertilization is the process where the male and female gametes (sperm and egg) fuse to form a zygote.
Correct answer: Fertilization- A. A small non-motile female gamete and a large motile male gamete
- B. A large non-motile female gamete and a small motile male gamete
- C. A large non-motile female gamete and a small non-motile male gamete
- D. A large motile female gamete and a small non-motile male gamete
Explanation: Oogamy is the sexual reproduction involving the formation and subsequent fusion of a large, usually stationary, non-motile, female gamete…
Correct answer: A large non-motile female gamete and a small motile male gamete- A. Morphogenesis
- B. Epimorphosis
- C. Morphallaxis
- D. Accretionary growth
Explanation: There are two mechanisms of regeneration: morphallaxis and epimorphosis.
Correct answer: Epimorphosis- A. Somatic hybridization
- B. Apomixis
- C. Sporulation
- D. Budding
Explanation: Apomixis is an asexual reproductive process in plants that does not involve gametic fusion.
Correct answer: Apomixis