Question 29:
Explain in 2-3 line of the following term with the help of of examples taken from different plant tissues.
Differentaition
De-differentiation
Re-differentiation
Question 29:
Explain in 2-3 line of the following term with the help of of examples taken from different plant tissues.
Differentaition
De-differentiation
Re-differentiation
Differentaition is permanent in size, structure,composition and function of cells, tissue or organs. For examples the meristematic tissues in plants gives rise to new cells which mature and get differentiated into special tissue or an organ of the plant, e.g., cells, distal to root apical meristem form root cap, cell of the periphery form epiblema, followed by cortex, endodermis, pericycle and vascular.
De-differentiation is the process of despecialisation of differentiated cells so that they again become differentiated and able to divide. e.g., in dicot stem, the cortical cells get de-differentiated and become meristematic to form cambium (inter fascicular cambium, and fascicular cambiums).
Re-differentiation The cambium cells thus formed, again re-differentiate to form secondary cortex cells secondary xylem and phloem elements and phelloderm in case of secondary growth of woody dicot plants.
Differentaition is permanent in size, structure,composition and function of cells, tissue or organs. For examples the meristematic tissues in plants gives rise to new cells which mature and get differentiated into special tissue or an organ of the plant, e.g., cells, distal to root apical meristem form root cap, cell of the periphery form epiblema, followed by cortex, endodermis, pericycle and vascular.
De-differentiation is the process of despecialisation of differentiated cells so that they again become differentiated and able to divide. e.g., in dicot stem, the cortical cells get de-differentiated and become meristematic to form cambium (inter fascicular cambium, and fascicular cambiums).
Re-differentiation The cambium cells thus formed, again re-differentiate to form secondary cortex cells secondary xylem and phloem elements and phelloderm in case of secondary growth of woody dicot plants.
