Multiple choice Xenia refers to effect of pollen on stem effect of pollen on taste of fruit effect of pollen on vascular tissue effect of pollen on endosperm effect of pollen on leaves Reveal answer Fill a bubble to check yourself D Correct answer Explanation Xenia is the effect of pollen on endosperm. It is the effect such as increase in size on the embryo or endosperm of a plant resulting from fertilisation with the pollen of a genetically distinct variety.