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Male pine cone, light micrograph

Male pine cone, light micrograph

C003/5761

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Credit

DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY

Caption

Male pine cone. Light micrograph of a longitudinal section through the male cone (strobilus) of a pine tree (Pinus sp.). The cone has a central axis (light-purple), from which emanate scale leaves (microsporophylls, dark blue to dark red). On their undersides are sporophylls bearing sac-like microsporangia (thin purple walls) full of developing microspores (red). When the wall of a microsporangium splits open the microspores are carried by the wind to the female strobilus. Magnification: x8 when printed 10 centimetres wide.

Release details

Model release not available. Property release not required.

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