Lysigenous cavity occurs in

Stem of Helianthus

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Root of Helianthus

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Root of Zea mays

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Stem of Zea mays

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Solution

The correct option is D Stem of Zea mays
Secretory cavities formed by the disintegration of cells in a tissue are called lysigenous cavity. In monocot stems(maize), some of the protoxylem cells disintegrate and form into a lysigenous cavity. it is called protoxylem lacuna.
So, the correct option is 'stem of Zea mays'.

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