In Pinus, male cone bears a large number of

Step-by-step solution

Microsporophylls and megasporophylls are the leaf-like structures on which microsporangia (pollen sacs) and magasporangia are borne on the same plant of Pinus. The sporophylls are aggregated in form of cones. (a) Male cones are smaller, also known as microstrobili (staminate strobili). (b) Female cones are larger, known as macrostrobili (ovulate strobili). Each male cone consists of an elongated axis, bearing a number of spirally arranged microsporophylls. On the underside of which two microsporangia develop and ge