Question

Select the incorrect statement with respect to a dicot embryo.

• A. Zygote divides to form two unequal cells
• B. The larger cell is called embryo cell
• C. Hypophysis can give rise to radicle
• D. Two cotyledons give the embryo a heart-shaped appearance as they form

Answer 1

The correct option is B The larger cell is called embryo cell

The basic body plan of the angiosperm laid down during embryogenesis also begins with an asymmetrical cell division in the zygote, giving rise to a smaller terminal cell (embryo cell) and a larger basal cell (suspensor cell).

The suspensor cell divides transversely and the last cell of the suspensor is called hypophysis. On further divisions, hypophysis can give rise to the radicle and root tip.

Dicots have two cotyledons, which give the embryo a heart-shaped appearance as they form. The axial body plan is evident by this heart stage of development. Hormones (specifically, auxins) may mediate the transition from radial to bilateral symmetry