McGraw-Hill Online Learning Center Test

McGraw-Hill Online Learning Center Test


1. Review the image and answer the following questions.

What portion of this amniotic egg supplies nutrients to the developing embryo?

A. amnionic cavity
B. yolk sac
C. chorion
D. allantois


2. Why is the amniotic egg the key feature of reptiles that allowed them to invade land?

A. It protected and kept the embryos from drying out.
B. It can be produced in great abundance then left to hatch on its own.
C. It could lie dormant for many years, thus preventing the extinction of many reptiles.
D. It could be enormous, conferring survival advantage to the reptile after hatching.
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