Question

How are the male and female gametophytes of pteridophytes and gymnosperms different from each other?

Answer 1

Criteria	Pteridophytes	Gymnosperms
Flagellation of male gamete	Flagellated	Usually non-flagellated
Means of fertilisation	Water is required for fertilisation	Water is not required for fertilisation
Pollen tube	Pollen tube is absent	Pollen tube is formed

Criteria	Pteridophytes	Gymnosperms
Location	In the prothallus	Inside the megasporangium in female cones
Existence	Independent	Not independent
Ovule	Absent	Present