The largest ovules, largest male and female gametes and

The largest ovules, largest male and female gametes and largest plants are found among

1. Angiosperms
2. Tree ferns and some monocots '
3. Gymnosperms
4. Dicotyledonous plants

Egg of Cycas (Gymnosperms) and its nucleus are the largest in the plant kingdom. The sperms of Cycas are also the largest in the plant kingdom.