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NCERT Textbook: Human Reproduction | Biology Class 12 - NEET PDF Download

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FAQs on NCERT Textbook: Human Reproduction - Biology Class 12 - NEET

1. What is human reproduction?
Ans. Human reproduction is the biological process of producing offspring through sexual reproduction. It involves the fusion of male and female gametes (sperm and egg cells) to form a zygote, which develops into an embryo and eventually a fetus. The process is facilitated by the reproductive organs, such as the testes, ovaries, uterus, and fallopian tubes.
2. What are the primary reproductive organs in males and females?
Ans. The primary reproductive organs in males are the testes, which produce sperm and male sex hormones. In females, the primary reproductive organs are the ovaries, which produce eggs and female sex hormones. Both males and females also have secondary reproductive organs, such as the uterus, fallopian tubes, and penis, which facilitate the process of fertilization and pregnancy.
3. How does fertilization occur in humans?
Ans. Fertilization in humans occurs when a sperm cell from the male partner penetrates an egg cell from the female partner, usually in the fallopian tube. The sperm must first travel through the vagina, cervix, and uterus to reach the fallopian tube, where it can encounter the egg. Once the sperm penetrates the egg, the two gametes fuse and form a zygote, which begins to divide and develop into an embryo.
4. What are common reproductive disorders in males and females?
Ans. Common reproductive disorders in males include erectile dysfunction, infertility, and prostate cancer. In females, common reproductive disorders include polycystic ovary syndrome (PCOS), endometriosis, and infertility. These disorders can have a variety of causes, such as hormonal imbalances, genetic factors, or lifestyle factors like smoking and obesity.
5. What are some methods of contraception?
Ans. Methods of contraception include hormonal methods like birth control pills, patches, and injections; barrier methods like condoms and diaphragms; intrauterine devices (IUDs); and sterilization procedures like vasectomy (for males) and tubal ligation (for females). Each method has its own benefits and risks, and individuals should consult with a healthcare provider to determine the best method for their needs.
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