Complex sentence: Through a number of ingenious insect traps, pollinating insects are kept inside the spathe to deposit pollen on the female flowers, these stay receptive for only one day, while the male flowers are still closed.
Split into simpler sentences: Through a number of ingenious insect traps, pollinating insects are kept inside the spathe to deposit pollen on the female flowers. These stay open only one day, while the male flowers are still closed.