Question

Protoxylem lacunae occur in

• A. Grass stem vascular bundles
• B. Cladodes
• C. Underground stems
• D. Climbers

Answer 1

The correct option is A Grass stem vascular bundles

In the protoxylem of monocot vascular bundles, some of the protoxylem cells disintegrate and form into a lysigenous cavity called Protoxylem lacunae. It stores water, so it is also called water cavity.

So, the correct option is ‘Grass stem vascular bundles’.