Biology · SEXUAL REPRODUCTION IN FLOWERING PLANTS

During embryogeny in a typical dicotyledonous plant, what is the correct chronological sequence of developmental stages from the zygote to the mature embryo?

1. Zygote \( \rightarrow \) Globular embryo \( \rightarrow \) Proembryo \( \rightarrow \) Heart-shaped embryo \( \rightarrow \) Mature embryo
2. Zygote \( \rightarrow \) Proembryo \( \rightarrow \) Heart-shaped embryo \( \rightarrow \) Globular embryo \( \rightarrow \) Mature embryo
3. Zygote \( \rightarrow \) Proembryo \( \rightarrow \) Globular embryo \( \rightarrow \) Heart-shaped embryo \( \rightarrow \) Mature embryo
4. Zygote \( \rightarrow \) Heart-shaped embryo \( \rightarrow \) Globular embryo \( \rightarrow \) Proembryo \( \rightarrow \) Mature embryo