Difference between conifers and cycads
- Whereas the cycad generative cell divides into the body cell (androgenous) and the sterile stalk cell, the conifer generative cell divides directly into two sperm, which raises debates as to whether these are actually sperm or sperm nuclei. Cycads have the largest sperm
- Whereas the male and female are produced on the same plant on conifers, the male and female are produced on different plants in cycads.
- Sperm have no flagella in conifers, whereas in cycads, they do. The pollen tube in conifers has to go further down