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प्रश्न
Fertilisation takes place in __________.
उत्तर
Fertilisation takes place in the fallopian tube.
Explanation:
During copulation (coitus), semen is released by the penis into the vagina (insemination). The motile sperms swim rapidly, pass through the cervix, enter the uterus and finally reach the ampullary region of the fallopian tube. The ovum released by the ovary is also transported to the ampullary region, where fertilisation takes place.
संबंधित प्रश्न
Briefly explain the events of fertilisation and implantation in an adult human female.
How is polyspermy prevented in humans?
Scientific term for the surgical removal of a section of fallopian tube.
If mammalian ovum fails to get fertilized, which one of the following is unlikely?
Match the following and choose the correct options:
| A. | Trophoblast | i. | Embedding of blastocyst in the endome |
| B. | Cleavage | ii. | Group of cells that would differentiate as embryo |
| C. | Inner cell mass | iii. | Outer layer of blastocyst attached to the endometrium |
| D. | Implantation | iv. | Mitonic division of zygote |
A change in the amount of yolk and its distribution in the egg will affect ______.
Which of the following hormones prepares the uterus for implantation?
The finger-like projections that appear on the trophoblast following implantation, are called chorionic villi.
Read the following and answer from given below:
Cleavage is the series of rapid mitotic divisions in the zygote and forms blastula. The 2, 4, 8, 16 daughter cells are called blastomeres. An embryo with 64 blastomeres is known as a blastocyst and has a blastocoel cavity. Blastocyst gets implanted in the uterine wall and leads to pregnancy.
The Site of implantation is ______
In sexually reproducing animals, the union of male and female gamete forms a cell which is called ______
