Multiple choice Few more outbreeding devices are Inhibiting pollen germination or pollen tube growth in pistil Production of unisexual flowers Monoecious condition in Castor and Maize All Reveal answer Fill a bubble to check yourself D Correct answer Explanation Outbreeding devices are strategies plants use to encourage cross-pollination. These include unisexual flowers, monoecious conditions, and physiological mechanisms like self-incompatibility.