Which amongst the following statement holds true for permanent cells/tissues?(a) These cells exit the G1 phase and enter the G0 phase(b) The newly formed cells from various meristems undergo differentiation to become permanent cells(c ) The cells of the permanent tissues do not generally divide further.(d) Xylem and phloem are a type of simple permanent tissue
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a
a, b and c
b
b, c and d
c
a, c and d
d
a, b, c and d
answer is A.
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Detailed Solution
Following divisions of cells in both primary and as well as secondary meristems, the newly formed cells become structurally and functionally specialised (differentiate) and lose the ability to divide (enter G0 phase). Such cells are termed permanent or mature cells and constitute the permanent tissues. The cells of the permanent tissues do not generally divide further. Permanent tissues having many different types of cells are called complex tissues. E.g., Xylem and phloem.