Identify the correct statements from the following.
(I) A single male and a few female flowers are present in a flowers like inflorescence in poinsettia.
(II) Sessile or subsessile flowers formed in the axils of leaves are crowded at the nodes in Leonotis.
(III) In Ficus, a fruit like inflorescence is present with all fertile flowers.
(IV) The floral axis is sympoidal in Hamelia.