NEET Biology question

Which one of the following is the correct sequence of tissues present in dicot stem during secondary growth?

(A)Phellogen, cork, primary cortex, secondary cortex
(B)Cork, primary cortex, secondary cortex, phellogen
(C)Primary cortex, secondary cortex, phellogen, corkCorrect
(D)Secondary cortex, phellogen, primary cortex, cork

Answer: (C)

Solution

During secondary growth, from outside inward (as the periderm forms within the cortical region), the sequence is: primary cortex (outermost, gets sloughed off later) → secondary cortex (phelloderm, formed inward of phellogen) → phellogen (cork cambium) → cork

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Question ID VK-105381