DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY
Yew (Taxus baccata) tree female cone. Light micrograph of a section through a female cone (berry) from a yew tree, showing the ovule (orange) and bracts (pink). Each ovule arises as a group of cells that forms a rounded hump of tissue called the nucellus. Within each ovule is the archegonium, which produces the female gametes (ova, eggs).
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