Explanation
The correct answer is "Cycas".
Cycas is a genus of gymnosperms that includes about 115 species of cycads. The archegonia of Cycas lack neck canal cells, which are present in the archegonia of many other plants.
Neck canal cells are specialized cells that occur in the neck region of the archegonium in many plants, including ferns like Dryopteris, mosses like Funaria, and liverworts like Sphagnum. These cells are thought to play a role in guiding the sperm to the egg for fertilization. However, in the archegonia of Cycas, the neck canal cells are absent, and the sperm must swim directly through the neck opening to reach the egg.
