stoma

Examples of stoma in the following topics:

• Main Structures and Summary of Photosynthesis

  • The gas exchange of carbon dioxide and oxygen occurs through small, regulated openings called stomata (singular: stoma), which also play a role in the plant's regulation of water balance.
  • Each stoma is flanked by guard cells that regulate the opening and closing of the stomata by swelling or shrinking in response to osmotic changes.

• Stem Anatomy

  • Two cells, known as guard cells, surround each leaf stoma, controlling its opening and closing and, thus, regulating the uptake of carbon dioxide and the release of oxygen and water vapor.
  • Openings called stomata (singular: stoma) allow a plant to take up carbon dioxide and release oxygen and water vapor.
  • The (a) colorized scanning-electron micrograph shows a closed stoma of a dicot.
  • Each stoma is flanked by two guard cells that regulate its (b) opening and closing.

• Tracheotomy and Intubation

  • The resulting stoma can serve independently as an airway or as a site for a tracheostomy tube to be inserted which will allow a person to breathe without the use of his or her nose or mouth.

• Leaf Structure, Function, and Adaptation

  • Two guard cells surround each stoma, regulating its opening and closing.