Double fertilization reduces the energetic cost of reproduction.In gymnosperms,the female gametophyte stockpiles food for the embryo in advance of fertilization.The investment is wasted if no zygote ever forms.In contrast,double fertilization ensures that an angiosperm devotes energy to the zygote only if sperm fertilizes the egg.Where is this energy stored in a fertilized angiosperm?

Question

Quizplus · Accepted Answer

The energy stored in a fertilized angiosperm is in the endosperm, which is a result of double fertilization. The zygote develops into the embryo, while the endosperm serves as a source of nutrients for the developing embryo and eventually the germinating seed.

Double Fertilization Reduces the Energetic Cost of Reproduction