Question

The figure given below shows stages in embryogenesis in a typical dicot (Capsella) identify structures A, B, C, and D respectively orWhich option is correct for the region produced from the apical octant (b) and basal octant (d) in Capsella type of embyonic development

A. Suspensor, Radicle, Plumule, Hypocotyls
B. Suspensor, Plumule, Redicle, Cotyledons
C. Hypopysis, Radicle, Plumule, cotyledons
D. Suspensor, Radicle, Plumule, Cotyledons

Answer 1

Correct Answer - D
The anterior octant occurs towards the chalazal end. It is called apical octant or chalazal octant. The shoot apex or plumule epicotyl and two cotyledons of embryo will develop from this octant. The posterior octant occurs towards the micropylar end. It is called basal octant towards the micropylar end. It is called basal octant or mictopylar octant. The hypocotyls and the central region of radical of the embryo will develop from this octant.