Question

A typical dicotyledonous embryo consists of
(A) Epicotyls, hypocotyls, plumules.
(B) Embryonal axis, two cotyledons
(C) Embryonal axis, hypocotyls
(D) Cotyledons, plumule

Answer 1

Hint: Cotyledons are structures found in plant embryos in seeds. The epicotyls, or immature shoots, and the radicle, or immature roots, are connected to the cotyledon, which is the central portion of a seed embryo.
The number of cotyledons present in the embryo is used to classify plants. It is a monocot plant if the embryo has only one cotyledon (monocotyledon), and a dicot plant if the embryo has two cotyledons (dicotyledon) it is a dicot plant.

Complete Answer:
The embryo is undifferentiated and globular at first. Proembryo refers to an early embryo with radial symmetry. With the formation of the radicle, plumule, and cotyledons, it transforms into an embryo.
With a faint plumule in the middle, two cotyledons separate from the sides.
The embryo takes on the form of a heart at this stage. The cotyledons expand at a rapid pace, causing them to elongate dramatically while the plumule remains a tiny mound of undifferentiated tissue.
An embryonal axis and two cotyledons make up a typical dicotyledonous embryo. Epicotyl refers to the portion of the embryonal axis above the cotyledons. It comes to an end at the plumule, which is the tip of the stem (future shoot). The section below the cotyledons is called hypocotyl, and it ends in the root tip, which is called radicle (future root). A root cap protects the tip of the root (calyptra).
The ovule grows in size as the embryo grows. Its integuments eventually harden, forming protective coverings. The embryo now rests, while the ovule transforms into a seed. In certain plants, such as Orobanche, Orchids, and Utricularia, the embryo remains globular or spherical even after seed shedding, with no discernible plumule, radicle, or cotyledons.

Therefore a typical dicotyledonous embryo consists of (B) Embryonal axis, two cotyledons

Note:
Around half of all dicot species are woody, with an annual rise in stem diameter due to the formation of new tissue by the cambium, a layer of cells that continues to divide over the life of the plant. Taproots and stem branching are both normal. Stomates (microscopic pores) on leaf surfaces are normally dispersed and oriented in different directions.