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Engineering Exams RRB-JE JE (Junior Engineer) CMA (Chemical and Metallurgical Assistant) DMS (Depot Material Superintendent) CS (Chemical Supervisor - Research) MS (Metallurgical Supervisor - Research) General Science 2024 16.12.24 Paper-1 Shift-3 Medium +1 -0.33
Which of the following helps a developing embryo to expel waste products in case of humans?
Correct Answer: A. Placenta
Explanation: The correct answer is Option A: Placenta. The placenta is a unique organ that forms during pregnancy to provide a vital link between the mother and the developing fetus. One of its essential roles is to manage the removal of waste products, such as carbon dioxide and nitrogenous compounds, produced by the embryo. It functions as an exchange interface where these waste materials are transferred from the fetal bloodstream into the mother's circulation, allowing her own excretory system to eliminate them. This process is critical for maintaining a non-toxic environment for the growing embryo. While the umbilical cord acts as the physical conduit for this exchange, the placenta is the organ responsible for the actual filtration and transfer. Other structures like the cervix, oviduct, and ovary serve reproductive functions but do not participate in embryonic waste removal.
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