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Closed stoma, light micrograph

Closed stoma, light micrograph

C007/2042

Rights Managed

50.3 MB (1.7 MB compressed)

5137 x 3425 pixels

43.4 x 29.0 cm ⏐ 17.1 x 11.4 in (300dpi)

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Credit

HERVE CONGE, ISM / SCIENCE PHOTO LIBRARY HERVE CONGE, ISM / SCIENCE PHOTO LIBRARY

Caption

Closed stoma, light micrograph. This structure (oval) is a pore that regulates the exchange of gases and water vapour into and out of a plant. Stomatal closure is a natural response to darkness or drought as a means of conserving water. Each pore is controlled by two guard cells. The pore opens when the guard cells become turgid with water, and close when the guard cells lose water. This stoma is from a tulip plant. Magnification: x445 when printed at 10 centimetres across.

Release details

Model release not required. Property release not required.

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