The micropylar cell of the suspensor swells up and  is known as:

The micropylar cell of the suspensor swells up. This cell of suspensor is known as haustorial-cell. It helps in absortion of of nutrition from the surrounding.Hypophysis is a part of the suspensor and forms few root cells.In the grass family the cotyledon is called scutellum.The reduced cotyledon in grasses is called epiblast.