STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS
ANIMAL TISSUES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A cell that gives rise to all the cells in the body including umbilical cord and placenta.
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A cell that gives rise to all the cell in the body ONLY.
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A cell that gives rise to the cells in an organ where it is located.
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None of the above.
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Detailed explanation-1: -Embryonic stem cells are pluripotent, meaning they can give rise to every cell type in the fully formed body, but not the placenta and umbilical cord. These cells are incredibly valuable because they provide a renewable resource for studying normal development and disease, and for testing drugs and other therapies.
Detailed explanation-2: -Finally, totipotent stem cells can make all three embryonic germ layers and the extra-embryonic tissue. The only known indisputably totipotent cell is the zygote.
Detailed explanation-3: -The umbilical cord contains a rich source of haematopoietic stem cells that can be used to reconstitute the blood system and can easily be extracted and cryopreserved, thus allowing for the establishment of HLA-typed stem cell banks.
Detailed explanation-4: -There are several main categories: the “pluripotent” stem cells (embryonic stem cells and induced pluripotent stem cells) and nonembryonic or somatic stem cells (commonly called “adult” stem cells). Pluripotent stem cells have the ability to differentiate into all of the cells of the adult body.
Detailed explanation-5: -Totipotent cells can form all the cell types in a body, plus the extraembryonic, or placental, cells.