Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms

Step-by-step solution

Gnetum resembles angiosperms in many aspects. (i) The leaves in Gnetum have reticulate venation that is an angiospermic character. (ii) The presence of vessels in the xylem is also an angiospermic character and also found in Gnetum. (iii) In Gnetum female gametophyte is only partly cellular before fertilization and becomes completely cellular only after fertilization. Some of the free nuclei act as eggs as there is no archegonium. The short apices in Gnetum and angiosperms show a distinct tunica and corpus configur