What changes occur during the transformation of a meristematic cell into a tracheary element?

  • A
    Cells lose their protoplasm.
  • B
    They develop very strong,elastic,lignocellulosic secondary cell walls.
  • C
    They are suitable for carrying water over long distances even under extreme tension.
  • D
    All of the above.

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During differentiation,the cells undergo few to major structural changes in their

Which process leads to the formation of a zygote,and which process results in the formation of tissues?

Which process leads to the formation of tissues?

Explain in $2-3$ lines each of the following terms with the help of examples taken from different plant tissues.
$(a)$ Differentiation
$(b)$ De-differentiation
$(c)$ Re-differentiation

Assertion $(A)$: Differentiation is a property of a living organism.
Reason $(R)$: Morphogenesis occurs during the process of development.

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