NEETBotanyPlant - Growth and Development
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The cells of the secondary cortex (phelloderm) and cork (phellem) are considered as redifferentiated tissues. Reason (R): They are formed by the division of cork cambium, a dedifferentiated tissue, and these new cells subsequently lose the capacity to divide to perform specific functions. In the li
Options
- ABoth (A) and (R) are correct but (R) is not the correct explanation of (A)
- B(A) is correct but (R) is not correct
- CBoth (A) and (R) are correct and (R) is the correct explanation of (A)
- D(A) is not correct but (R) is correct
Correct answer
C. Both (A) and (R) are correct and (R) is the correct explanation of (A)
Step-by-step solution
Assertion (A) is correct because phelloderm (secondary cortex) and phellem (cork) are secondary tissues that have matured and lost their capacity to divide. Reason (R) is also correct and provides the exact explanation for (A). Cork cambium (phellogen) is a secondary meristem formed by the dedifferentiation of mature parenchyma cells. When the cells produced by the division of this dedifferentiated cork cambium mature and lose their capacity to divide to perform specific functions (like protection), the process is