For more than a century, researchers have marveled at how pollen creeps down into a plant, growing a tube that twists and turns to reach the target ovary. But the nature of the siren song guiding this ...
Annals of Botany, Vol. 85, Supplement A: Pollen-Stigma Interactions (March 2000), pp. 79-85 (7 pages) Pollen tube growth in the ovary is examined, paying particular attention to how changes in the ...
Sex organ cells in mouse embryos, identified by a marker for ovarian (pink) or testicular (blue) development. Left: XY embryo with cells marked in blue. Right: XX embryo with cells marked in pink.
American Journal of Botany, Vol. 16, No. 7 (Jul., 1929), pp. 525-542 (22 pages) Two ovules are formed within the simple pistil of a sour cherry blossom. Ordinarily one ovule degenerates at about ...
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