I do not know what this plant, I guess that is a tree, a lemon tree, but do not know! Can someone help me, please? I am attaching some images, I hope you can help me. With esteem and respect, Cipry
Not much to go on at this stage of development. If it was possible to find out what fruit the seed came out of that would certainly be a good indication of what kind of citrus the seedling was. Otherwise you will most likely have to wait until the plant reaches sexual maturity and begins flowering and fruiting.