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प्रश्न
State the Function of Chorionic Villi
उत्तर
The function of Chorionic villi:
• It interdigitates with projections from uterine tissue to form a structure called the placenta, which is the connecting link between the mother and the foetus.
• It facilitates the supply of oxygen and nutrients to the embryo.
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संबंधित प्रश्न
Mention any two functions of the human placenta.
Which of the following statements are correct with respect to hormones secreted by the placenta?
- The placenta secretes relaxin during the later stage of pregnancy.
- The placenta secretes a high amount of FSH during pregnancy.
- The placenta secretes relaxin during the initial stage of pregnancy.
- The placenta secretes hCG and hPL during pregnancy.
Placenta is
Explain the formation of placenta after the implantation in a human female.
Draw a diagram showing human foetus within the uterus and label any four, parts in it.
Explain the phases in embryonic development from the morula stage till the establishment of pregnancy in a human female.
Name the type of antibody that can be transferred through the placenta.
The diagram given below represents a specific stage of human embryonic development. Identify the stage.
During embryogenesis in dicots, the zygote divides into a basal cell and a terminal cell. The basal cell divides repeatedly to produce a structure called suspensor. Carefully observe the image given below and describe the function of cell – A and cell – B of the suspensor.
Zygote
The diagram given below shows the early embryonic stages of fish, reptiles, birds and humans. Though adult reptiles, birds and mammals breathe air, their embryos possess gills. How does this fact support evolution?
