Concept:Syllogism rules: from "All A are B" we cannot conclude "All B are A".Explanation:Given: All flowers are stems. All stems are roots.So we have: flowers → stems → roots.Conclusion I: All roots are flowers. This reverses the direction, which is invalid.Conclusion II: All stems are flowers. This also reverses the first statement, invalid.Neither conclusion logically follows.Answer:Neither I nor II follows.