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What are primary phloem and secondary ph...

What are primary phloem and secondary phloem?

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Vascular cambium forms :- (a) Secondary xylem & secondary phloem (b) primary xylem & Primary Phloem (c) Only Secondary phloem (d) Only Primary xylem

What happens to primary xylem and primary phloem during secondary growth?

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Assertion: Secondary growth usually occurs in dicotyledonous stems. Reason: The vascular cambium present between xylem and phloem possesses the ability to form secondary xylem and secondary phloem respectively.

Assertion :- Old woody plant parts are devoid of primary phloem. Reason :- Primary phloem gets crushed due to continuous formation and accumulation of secondary xylem.

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What happens to primary phloem in stem after secondary growth? (a) Compresses outside and degenerates (b) Compresses inside and degenerates (c) Becomes part of secondary phloem (d) Modifies in sclerenchyma