Do all dicot seeds have endosperm? Explain.

Question

Do all dicot seeds have endosperm? Explain.

Answer 1

Dicot seeds do have endosperms in their embryo stage. These are the two cotyledons which nurture the growth of the seedling, and they disappear through some time.

Monocot seeds also have endosperms in their embryo stage, same as dicot seeds. But only one cotyledon, but it also disappears as the young plant grows.  

Answer 2

Unlike most monocots which have lots of endosperm in their mature seeds, most dicot seeds have little or no endosperm when mature.

Monocots have a large endosperm in the seeds, and the embryo sporophyte has one cotyledon; in dicots the nutrients of the endosperm have been transferred into the two cotyledons of the embryo sporophyte. (di = 2, mono = 1)