In the grass family cotyledons are called

Concept-
-The cotyledons act as a food store in plant seeds.
-Cotyledons are often fleshy and full of reserve food materials.
-Based on the number of cotyledons vascular plants can be classified as Monocot and Dicot.
-Cot word represents the cotyledons, which means an embryonic leaf.
-Two different types of cotyledon are Monocotyledons and Dicotyledons.
-Monocot-
-Monocotyledons are the angiosperms or the flowering plants in which the seeds typically contain only one embryonic leaf or Cotyledon.
-Example- Ginger, onions, wheat, and grass.
-Dicot- 
-Dicotyledons are the angiosperms or the flowering plants in which the seeds contain two embryonic leaves or cotyledons.
-Example- All legumes including beans, lentils, pea, and peanuts.
Explanation-
In the grass family, the cotyledon is called scutellum.
-Embryos of grass are monocotyledons.
-The scutellum is situated towards one side (lateral) of the embryonal axis.
-At its lower end, the embryonal axis has the radical and root cap enclosed in an undifferentiated sheath called coleorhiza.
-The portion of the embryonal axis above the level of attachment of the scutellum is the epicotyl.
-Epicotyl has a shoot apex and a few leaf primordia enclosed in a hollow foliar structure, the coleoptile.

🔴Additional Information:
-The cylindrical portion below the level of cotyledons is hypocotyl that terminates at its lower end in the radicle or root tip.
-The portion of the embryonal axis above the level of attachment of the scutellum is the epicotyl.
-The fertile part of the seed is the tigellum.