Exam 51: Animal Development

Figure 51-2 Use the figure to answer the corresponding question(s). Refer to the accompanying figure. Which structure is the blastocoel?

Isolecithal eggs exhibit holoblastic cleavage.

A primitive groove is the equivalent of a:

Figure 51-4 . Refer to the accompanying figure. Which structure can be transferred to a different location in the embryo and still cause differentiation of surrounding tissues?

Discuss how environmental factors can have a negative impact on the development of a fetus.

Which of the following arises from the mesoderm?

In mammals, the ____ is a temporary center for the formation of blood cells.

In humans, the allantois:

The extraembryonic membrane closest to the embryo is the:

Figure 51-3 Refer to the accompanying figure. The allantois is identified by number:

A teratogen is a drug that:

Figure 51-2 Use the figure to answer the corresponding question(s). The developmental stage represented in the accompanying figure is a(n):

Human chorionic gonadotropin signals the placenta to produce large amounts of estrogen and progesterone.

Figure 51-2 Use the figure to answer the corresponding question(s). The developing embryo in the accompanying figure is representative of development in a(n):

Hensen's node is located:

Figure 51-1 The structure labeled as 2 in the accompanying figure is the:

Which statement about early embryonic development in humans is FALSE?

Gastrulation is the process by which an embryo becomes three-layered.

The blastopore is the opening to the blastocoel .