Question

Which option among the following has the correct sequence of stages of dicot embryogeny?

• A. Proembryo, mature embryo, globular embryo, heart-shaped embryo
• B. Heart-shaped embryo, globular embryo, proembryo, mature embryo
• C. Proembryo, heart-shaped embryo, globular embryo, mature embryo
• D. Proembryo, globular embryo, heart-shaped embryo, mature embryo

Answer 1

The correct option is D Proembryo, globular embryo, heart-shaped embryo, mature embryo

Embryogeny refers to the process of formation of embryo from zygote.

Initially the single-celled zygote divides to form a proembryo. As the divisions proceed, the proembryo subsequently gives rise to the globular stage embryo. The globular stage embryo gives rise to a heart-shaped embryo which finally develops into a mature embryo. The mature dicot embryo has two cotyledons and an embryonal axis.