Tunica corpus theory was proposed by

  • A

    Schmidt

  • B

    Strasburger

  • C

    Nageli

  • D

    Hofmeister

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Assertion: The two cotyledons in seed are embryonic leaves.
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  • [AIIMS 2002]

$A$ : Complementary cells are cut-off by phellogen towards outside.

$R$ : Phellogen is partially secondary in origin.