Which of the following is not a developing stage of embryo in angiosperms(monocotyledons and dicotyledons)?

Bean shaped embryo.

The correct answer is a bean-shaped embryo.

The developing stages of an embryo in angiosperms are:

• Proembryo: This is the earliest stage of embryo development, and it is characterized by a small group of cells that are dividing rapidly.
• Globular embryo: This stage is characterized by a spherical shape, and it is the stage at which the embryo begins to develop its basic body plan.
• Heart-shaped embryo: This stage is characterized by a heart-shaped cotyledon, and it is the stage at which the embryo begins to develop its vascular system.
• Torpedo-shaped embryo: This stage is characterized by a torpedo-shaped cotyledon, and it is the stage at which the embryo is ready to germinate.