In mature vascular bundle of monocot stem, lower most protoxylem disintegrates and form a cavity called protoxylem ___________.

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In mature vascular bundle of monocot stem, lower most protoxylem disintegrates and form a cavity called protoxylem ___________. ACNULA

LACUNA

In mature vascular bundle of monocot stem, lower most protoxylem disintegrates and form a cavity called protoxylem ___________.

ACNULA