Biology · PLANT KINGDOM

Compare the distribution of male and female strobili in Pinus and Cycas:

1. Pinus is dioecious (male and female cones on different trees); Cycas is monoecious (on same tree).
2. Both Pinus and Cycas bear male and female cones on separate branches of the same tree.
3. Pinus has male and female cones borne on the same tree; in Cycas male cones and megasporophylls are borne on different trees.
4. Both Pinus and Cycas lack male cones and produce bisexual strobili exclusively.