Question

which side is embryonal cell in monocot embryogeny

Answer 1

In a typical dicot (Fig. 2.30) the zygote elongates and then divides by a transverse wall into two unequal cells (Schulz and Jensen, 1969).


The larger basal cell is called suspensor cell. The other towards the antipodal end is termed as terminal cell or embryo cell. The suspensor cell divides transversely a few times to produce a filamentous suspensor of 6-10 cells. The suspensor helps in pushing the embryo in the endosperm.

The first cell of the suspensor towards the micropylar end becomes swollen and functions as a haustorium. The haustorium has wall ingrowths similar to transfer cells (Schulz and Jensen, 1969). The last cell of the suspensor at the end adjacent to the embryo is known as hypophysis. Hypophysis later gives rise to the radicle and root cap.

Answer 2

Answer:

Structure of Monocot Embryo:

Structure of Monocot Embryo:It is situated towards lateral side of embryonal axis. This axis at its lower end has radicle and root cap enclosed in a sheath called coleorhiza. The part of axis above the level of attachment of scutellum is called epicotyl.