CELL DIVISION
CELL DIVISION AND CANCEROUS CELLS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Stem cells from bone marrow develop into blood cells
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Bone marrow cells are used to repair damage to heart tissue
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a leaf cell divides as a plant leaf grows
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A fertilized egg develops limbs and a hand
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Detailed explanation-1: -An example of cell differentiation is the development of a single-celled zygote into a multicellular embryo that further develops into a more complex multisystem of distinct cell types of a fetus.
Detailed explanation-2: -The development of tracheary elements (TEs), the building blocks of the water-conducting tubes in the xylem, from parenchyma cells is an impressive example of plant cell differentiation. Cells of Zinnia elegans that are derived from mesophyll protoplasts can be induced to undergo differentiation to TEs in vitro [57].
Detailed explanation-3: -The cells of multicellular animals and plants must also differentiate, so that its cells develop features that enable them to fulfil specific roles. Cells that have differentiated have become specialised. Without this specialisation, complex multicellular animals and plants would not exist.
Detailed explanation-4: -The original mass of cells, which have not undergone differentiation, are known as stem cells. Unlike normal cell division, which creates two identical daughter cells, the division of stem cells is asymmetric cell division.