花粉是有花植物的精子细胞,传递遗传物质,使其发展成为一个新的植物个体。在白垩纪时代,一些甲虫以花粉为食,植物也发育了一种机制,使甲虫能有效地为其传粉。植物不但为甲虫提供了花粉,还提供花蜜。要产生花蜜,植物就必须消耗营养物质,如氮化物、磷化物和硫化物。甲虫和植物的 Pollen is a sperm cell with a floral plant, transmitting genetic material, and developing it into a new plant individual. During the Cretaceous period, some beetles feed on pollen, and the plant has developed a mechanism that enables the beetles to pollinate effectively. Plants not only provide pollen for beetles but also provide nectar. To produce nectar, plants must consume nutrients such as nitrides, phosphides, and sulfides. Beetles and plants