Embryology: Developmental Stages

Play an AI-generated podcast conversation about this lesson

What are the three tissue layers present in bilaterians?

Ectoderm, endoderm, and mesoderm (correct)

Ectoderm, mesoderm, and endodermic

Endoderm, ectoderm, and mesenchyme

Mesoderm, endoderm, and ectodermic

What is the term for the study of the development of the zygote?

Developmental biology

Embryology (correct)

Germ layer formation

Embryogenesis

What is the stage of development where each cell division produces smaller cells that then form a cavity?

Morula

Gastrula

Blastula (correct)

Cleavage

Which type of embryonic development is characterized by determinate cleavage?

Protostomes Signup and view all the answers

What is the term for the body cavity found in some animals?

Coelom Signup and view all the answers

Which group of animals is characterized by the presence of a mesoglea?

Cnidarians Signup and view all the answers

What is the term for the process by which the gastrula stage develops into a more complex body structure?

Gastrulation Signup and view all the answers

Which group of animals is characterized by the absence of a gut?

Platyhelminthes Signup and view all the answers

What is the term for the process of cell division that occurs during early embryonic development?

Cleavage Signup and view all the answers

Which type of embryonic development is characterized by indeterminate cleavage?

Deuterostomes Signup and view all the answers

In bilaterians, which tissue layer covers the embryo's surface?

Ectoderm Signup and view all the answers

During cleavage, what is the result of each cell division?

Smaller cells Signup and view all the answers

What is the characteristic of protostome gastrulation?

Gastrulation becomes the mouth Signup and view all the answers

What is the consequence of removing a cell in a protostome embryo?

The cell removed dies Signup and view all the answers

What is a characteristic of deuterostome cleavage?

Indeterminate cleavage Signup and view all the answers

What is the name of the space between the ectoderm and endoderm in cnidarians?

Mesoglea Signup and view all the answers

What is the significance of the coelom in constructing evolutionary trees?

It is often lost in some groups Signup and view all the answers

What is a characteristic of platyhelminthes?

They are acolomate Signup and view all the answers

What is the general term for the three layers present in bilaterian embryos?

Germ layers Signup and view all the answers

What is the term for the study of the development of the fertilized ovum?

Embryology Signup and view all the answers