Question

Why bulliform cells have less activity?

Answer 1

Answer:

When folded, the leaves are less exposed to sunlight, so they are heated less. This movement is due to water being absorbed or lost by very large epidermal cells, called bulliform cells. The bulliform cells (arrows) are located near the midribmidrib.

Answer 2

Answer:

When folded, the leaves are less exposed to sunlight, so they are heated less. This movement is due to water being absorbed or lost by very large epidermal cells, called bulliform cells.