NEET 2000 Biology question

What happens in plants during vascularisation :

(1)Differentiation of procambium, formation of primary phloem followed by formation of primary xylem
(2)Differentiation of procambium followed by the formation of primary phloem and xylem simultaneouslyCorrect
(3)Formation of procambium, primary phloem and xylem simultaneously
(4)Differentiation of procambium followed by the formation of secondary xylem

Answer: (2)

Solution

Vascularisation in a young plant organ starts from the procambium (the primary meristem that forms the provascular strands). The procambium first differentiates, and then the primary phloem and the primary xylem are formed from the same procambial strands, option (2). Option (3) is wrong because the procambium is

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Question ID VK-088714