In pteridophytes: 1.The gametophytes of the pteridophytes bear male and female *** organs called archegonia and antheridia, respectively. 2. Water is required for transfer of antherozoids – the male gametes released from male *** organ, to the mouth of female *** organ. 3. Fusion of male gamete with the egg result in the formation of zygote. 4. Zygote thereafter produces a multicellular well-differentiated sporophyte 5. Sporophyte is the dominant phase of the pteridophytes.