Answer
e. All of these are correct.
Work Step by Step
In seed plants, you can find a complex vascular tissue and pollen grains that are not flagellated. Pollination involves pollen grains carrying and delivering sperm via a pollen tube. In seed plants, the retention of the female gametophyte is within the ovule and they also have roots, stems, and leaves. Therefore, the correct answer would be e. All of these are correct.