"They are primitive plants, reproducing by means of seeds produced by unisexual conelike structures, which contain either ovules or pollen sacs."
—Alan Toogood, Plant Propagation: The Fully Illustrated Plant-by-Plant Manual of Practical Techniques
I don't think it's speaking as to what sexual organs a cycad may possess. Rather, it's saying cycads are primitive because they haven't developed distinct structures for sperm and egg. Is that right?
—Alan Toogood, Plant Propagation: The Fully Illustrated Plant-by-Plant Manual of Practical Techniques
I don't think it's speaking as to what sexual organs a cycad may possess. Rather, it's saying cycads are primitive because they haven't developed distinct structures for sperm and egg. Is that right?
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No plants have sperm or eggs.
Most plants have male and female reproductive organs in one place. There are some, however, where the male and female parts are separate. That is what unisexual means in this case; some of the cones contain the female reproductive gamete, ovules, and others contain the pollen sacs and pollen. Each cone is distinctively of one sex.
Most plants have male and female reproductive organs in one place. There are some, however, where the male and female parts are separate. That is what unisexual means in this case; some of the cones contain the female reproductive gamete, ovules, and others contain the pollen sacs and pollen. Each cone is distinctively of one sex.