Water contaning cavities in vascular bundles are found in

Options

A. sunflower
B. maize
C. Cycas
D. Pinus

Answer

b

Explanation

In monocot stem like Zea mays, vascular bundles are conjoint , collateral and closed .In vascular bundles , the lowermost protoxylem vessels and xylem parenchyma cells dissolve forming a water containing schisolysigenous cavity called protoxylem cavity or lacuna or lysigenous cavity. Protoxylem cavity and protophloem may be absent in the smaller vascular bundles in maize.