Endosperm, a product of double fertilization in angiosperms is absent in the seeds of
Orchids
Explanation:
The endosperm is a product of double fertilization in angiosperms and is a storing tissue which provides nourishment to the developing embryo.
The plants with seeds with no endosperm are called non-endospermic. This happens because the complete endosperm gets used up by the embryo during its development. In the above given options, only orchid is a non-endospermic plant.