Human Reproduction Class 12 Questions And Answers

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Human Reproduction Class 12 Questions And Answers - Quiz

If you are looking for human reproduction class 12 questions and answers for the revision, you've arrived at the right place. This quiz contains some of the important questions from the chapter human reproductive system. Take the test and check your knowledge for the same. Human reproduction occurs when a male sperm cell fertilizes with female egg cells to form a zygote. Reproduction is necessary to maintain the continuity of life on earth. Let's play this quiz now.


Questions and Answers
  • 1. 

    The testes are the male reproductive glands. They are surrounded by three layers of tissue. Which tissue have double membrane and form outer covering the testes?

    • A.

      Tunica Albuginea

    • B.

      Tunica Vasculosa

    • C.

      Tunica Vaginalis

    • D.

      Tunica Spermatogenesis

    Correct Answer
    C. Tunica Vaginalis
    Explanation
    The correct answer is Tunica Vaginalis. The testes are surrounded by three layers of tissue, and the outer covering is formed by the double membrane called Tunica Vaginalis.

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  • 2. 

    How to prevent vaginal prolapse?

    • A.

      Lifting heavy objects

    • B.

      Smoking

    • C.

      Maintain weight

    • D.

      Have more vaginal childbirth

    Correct Answer
    C. Maintain weight
    Explanation
    Maintaining weight is a good way to prevent vaginal prolapse because obesity can increase the risk of having vaginal prolapse.

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  • 3. 

    What would be a direct result of an enzymatic deficiency on the acrosome?

    • A.

      Primary spermatocyte would not become secondary spermatocyte

    • B.

      Egg would not complete Metaphase II

    • C.

      Spermatid would not become primary spermatocyte

    • D.

       Implantation may occur in uterine tube

    Correct Answer
    B. Egg would not complete Metaphase II
    Explanation
    Acrosome is responsible for sperm penetration in the egg, if that does not occur the egg would not complete Metaphase II

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  • 4. 

    Which structure is likely to be immediately affected due to spread of infection in the cervical canal?

    • A.

      Fimbriae

    • B.

      Clitoris

    • C.

      Fallopian tube

    • D.

      Fornix

    Correct Answer
    D. Fornix
    Explanation
    The fornix is the superior portion of the vagina which is near the protruding uterine cervix

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  • 5. 

    Which structures are correctly paired with its functions?

    • A.

       Ovary - provides milk for newborn

    • B.

      Testes - Development of sperm

    • C.

      Placenta - Storage of released eggs

    • D.

      Uterus - produces estrogen

    Correct Answer
    B. Testes - Development of sperm
    Explanation
     

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  • 6. 

    ________ is the condition which the testes do not descend into the scrotum.

    Correct Answer
    Cryptochidism
    Explanation
    Cryptorchidism is the absence of at least one testicle from the scrotum.

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  • 7. 

    What will happen if there is an imbalance between the hormones estrogen and progesterone during pregnancy? It can lead to __________.

    Correct Answer
    Miscarriage
    Explanation
    Because reduction in progesterone level causes the uterus to shrink, the uterus is a house a fertilized egg until the fetus is ready to deliver.

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  • 8. 

    Male and female gametes are

    • A.

      Haploid

    • B.

      Diploid

    • C.

      Triploid

    • D.

      None of these

    Correct Answer
    A. Haploid
    Explanation
    Male and female gametes are haploid because they contain half the number of chromosomes compared to the other cells in the organism. This is necessary for sexual reproduction, as when the gametes fuse during fertilization, the resulting zygote will have the correct number of chromosomes. Therefore, haploid gametes ensure that the offspring will have the correct number of chromosomes and maintain the species' genetic diversity.

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  • 9. 

    Where is the fimbriae located?

    • A.

      At the end of the fallopian tubes

    • B.

      At the end of the scrotum

    • C.

      At the end of the uterus

    • D.

      At the end of the vaginal opening

    Correct Answer
    A. At the end of the fallopian tubes
    Explanation
    The fimbriae are located at the end of the fallopian tubes. The fimbriae are finger-like projections that extend from the infundibulum, which is the funnel-shaped opening of the fallopian tube. They help to capture the released egg from the ovary and guide it into the fallopian tube for fertilization.

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  • 10. 

    Where does fertilization usually take place in females?

    • A.

      In the vagina

    • B.

      In the uterus

    • C.

      In the fallopian tubes

    • D.

      Everywhere

    Correct Answer
    C. In the fallopian tubes
    Explanation
    Fertilization usually takes place in the fallopian tubes. After ovulation, the egg is released from the ovary and travels through the fallopian tube towards the uterus. If sperm is present in the fallopian tube, it can fertilize the egg before it reaches the uterus. The fallopian tubes provide the ideal environment for fertilization to occur, with the help of cilia and muscular contractions that aid in the movement of the egg and sperm.

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