関連ワード:  write any two function of leaf    write any two function of leaf class 7    write any two functions of leaf class 6    write the two function of leaf    write any two functions of the leaves in plants    write any two primary functions of leaf    write the two main function of leaf    write any two function of root stem and leaf each    write any two function of root stem and leaf is    write any two functions of veins in a leaf