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Cohesion–tension theory of water transport in vascular plants
Water evaporates from aboveground plant parts a process called transpiration mainly through open stomata The evaporation exerts tension pulls on the narrow columns of water that fill xylem tubes The ...
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A zebra orchid (Caladenia cairnsiana) mimics the scent of a female wasp
A zebra orchid Caladenia cairnsiana mimics the scent of a female wasp Male wasps follow the scent to the flower then try to copulate with and lift the dark red ...
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Flowering plant life cycle
An anther has two pollen sacs with diploid cells that give rise to microspores Meiosis produces microspores Microspores develop into pollen grains male gametophytes An ovule forms on the ovary ...
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Root nodule development.
Nodule development involves a series of chemical signals sent back and forth between rhizobia and their host plants Legumes start this exchange by secreting particular flavonoid compounds from their roots ...
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