optiosn for 1: -protostome-deuterostome options for 2: -an acoelomate-a coelomate -a psuedocoelomate ### Embryonic Germ Layers and DevelopmentIn the study of embryonic development, it is essential to understand the structure and function of the three primary germ layers: the mesoderm, the ectoderm, and the endoderm. These layers form during the early stages of embryogenesis and give rise to all the tissues and organs in an organism.#### Diagram ExplanationBelow is a detailed cross-sectional diagram of a developing embryo, highlighting the three primary germ layers:**[Insert High-Quality Diagram Here]**- **A**: Mesoderm- **B**: Ectoderm- **C**: EndodermEach of these layers will differentiate into specific tissues and organs as the embryo matures.#### Germ Layers**Mesoderm**- Position: Annotated as label "A" in the diagram.- Function: The mesoderm gives rise to the muscles, bones, circulatory system, and other internal structures.**Ectoderm**- Position: Annotated as label "B" in the diagram.- Function: The ectoderm forms the outer layer, which develops into the skin and the nervous system.**Endoderm**- Position: Annotated as label "C" in the diagram.- Function: The endoderm generates the inner lining of the digestive tract and other internal organs.#### Developmental Examples1. **Opening Formation and Animal Classification** - In the above diagram, there is an opening that has appeared on the right side of the developing embryo, creating an opening from the outside to the developing gut cavity. If this opening goes on to form the mouth in the fully developed animal, then this embryo would be an example of a **protostome**.2. **Mesoderm Development into Body Cavity Lining** - If cells from the mesoderm of this embryo go on to develop into a lining for the body cavity, then this embryo would be an example of a **coelomate**.Understanding the roles of these germ layers is crucial for comprehending how complex organisms develop from a single-celled zygote into a fully formed body with intricate tissue and organ systems.

Developmental biology is the study of the process by which organisms grow and develop.

A A Mesoderm Ectoderm Endoderm In the above diagram, there is an opening that has appeared on the right side of the developing embryo, creating an opening from the outside to th developing gut cavity. If this opening goes on to form the mouth in the fully developed animal, then this embryo would be an example of a If cells from the mesoderm of this embryo go on to develop into a lining for the body cavity, then this embryo would be an example of

A A Mesoderm Ectoderm Endoderm In the above diagram, there is an opening that has appeared on the right side of the developing embryo, creating an opening from the outside to th developing gut cavity. If this opening goes on to form the mouth in the fully developed animal, then this embryo would be an example of a If cells from the mesoderm of this embryo go on to develop into a lining for the body cavity, then this embryo would be an example of

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter17: Development And Aging

Section: Chapter Questions

Problem 1SQ

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