stoma
/ˈstəʊmə/noun
उच्चारण स्टोम
रंध्र
Advanced word
noun
- 1
[C] biology
any of the tiny openings on the surface of a leaf or stem through which gases and water vapour pass in and out
रंध्र
- Carbon dioxide enters the leaf through the stomata.
- Most stomata are found on the lower surface of a leaf.
- 2
[C] medical
an opening made by a surgeon in the surface of the body, connecting to an organ inside
(शल्य-चिकित्सा से बनाया गया) छिद्र, स्टोमा
- After the operation he had to wear a bag over his stoma.
✓In the exam
General knowledge
Each stoma is opened and closed by two guard cells, and most of the water lost in transpiration passes out through the stomata.
GK के अनुसार हर stoma को दो guard cells खोलती और बंद करती हैं, और transpiration में निकलने वाला अधिकांश पानी stomata से ही बाहर जाता है।