Siphonogamy is a condition in plants in which pollen tubes are developed for the transfer of the male cells to the eggs. The seed plants are siphonogamous, while in the lower plants the male cells usually swim to the eggs. As a consequence, the spermatophytes were sometimes called siphonogams.

What is meant by Siphonogamous?

: accomplishing fertilization by means of a pollen tube most seed plants are siphonogamous.

Which plants are Siphonogamous?

This is a vascular plant of the subkingdom Embyophyta and includes conifers, cycads, ginkgoes, and gnetophytes. Complete answer: Siphonogamy is exhibited by the gymnosperms. In siphonogamy, the pollen tubes are developed for the transfer of male cells to the eggs.