Complex sentence: Male plants bear pollen cones 4 to 7 millimeters long, and female plants may be darker to reddish in color and bear seed cones which are slightly larger and contain one seed each.
Split into simpler sentences: Male plants bear pollen cones 4 to 7 millimeters long. Female plants may be darker to reddish in color, bearing seed cones which are slightly larger than those of the male plant and contain only one seed each.