Question

Some seeds have no cotyledon?

Answer 1

Monocot plants seeds don’t have any cotyledons because cotyledons are only found in dicots seeds. Plants are categorized into two different categories based on this feature are called monocots and dicots.
Most of grasses and grains such as wheat, rice, barley, corn, grasses etc.
Most of long growing plants such as soybeans, pulses, groundnut etc.

Answer 2

Yes some seeds do not have cotyledons.