In the grass family the cotyledon is called

In the grass family the cotyledon is called scutellum that is situated towards one side (lateral) of the embryonal axis.

Aleurone layer is a proteinaceous layer found in maize.

Testa is the outer covering of the seed coat.

In monocot seed at the lower end there is the presence of the embryonal axis has the radical and root cap enclosed in an undifferentiated sheath called coleorrhiza.