Which structure or structures function to open and close the stomata?
A) Cuticle
B) Mesophyll
C) Palisade cells
D) Guard cells
E) Chloroplasts

Question

Quizplus · Accepted Answer

Guard cells are specialized cells in the epidermis of leaves, stems, and other organs that are used to control the opening and closing of stomata. Stomata are small openings or pores in the plant epidermis that allow for gas exchange (CO2 in, O2 out) and transpiration. The guard cells swell or shrink by osmosis, depending on the water pressure within the cells, thus opening or closing the stomatal pores.

Which Structure or Structures Function to Open and Close the Stomata