NEET > Biology Class 12 > Human Reproduction One Shot (NCERT) - 1
Human Reproduction One Shot (NCERT) - 1 Video Lecture - Biology Class 12 - NEET
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FAQs on Human Reproduction One Shot (NCERT) - 1 Video Lecture - Biology Class 12 - NEET
| 1. What are the stages of human reproduction? |  |
Ans. Human reproduction involves several stages. The first stage is fertilization, where the sperm and egg unite to form a zygote. This is followed by implantation, where the zygote attaches to the uterus lining. The zygote then develops into an embryo, which further grows into a fetus. Finally, after a gestation period, the fetus is ready for birth.
| 2. How does fertilization occur in humans? | |
Ans. Fertilization in humans occurs when a sperm cell from the male fuses with an egg cell from the female. This usually takes place in the fallopian tubes. The sperm releases enzymes to penetrate the outer layers of the egg, allowing one sperm to enter and fuse with the egg's nucleus. This fusion forms a zygote, which is the first step in human reproduction.
| 3. What is the role of hormones in human reproduction? | |
Ans. Hormones play a crucial role in human reproduction. In males, the hormone testosterone is responsible for the development and maturation of sperm cells. In females, hormones like estrogen and progesterone regulate the menstrual cycle and prepare the uterus for pregnancy. Hormones also regulate the release of eggs from the ovaries and help maintain a suitable environment for fertilization and pregnancy.
| 4. How does the menstrual cycle affect human reproduction? | |
Ans. The menstrual cycle is a monthly process in females that prepares the uterus for pregnancy. During the cycle, hormonal changes cause the lining of the uterus to thicken, preparing it to receive a fertilized egg. If fertilization does not occur, the lining is shed through menstruation. The menstrual cycle is an important part of human reproduction as it determines the timing of ovulation and the release of eggs for potential fertilization.
| 5. What are some common disorders or issues related to human reproduction? | |
Ans. There are several common disorders or issues related to human reproduction. Some examples include infertility, where individuals have difficulty conceiving; sexually transmitted infections, which can affect fertility and overall reproductive health; menstrual disorders like irregular periods or heavy bleeding; and genetic disorders that can be passed on to offspring. It is important to seek medical advice and care for any reproductive issues to ensure optimal reproductive health.
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