BIOLOGY
BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 34, Problem 2IQ
Summary Introduction

To explain: The reason how the placenta is similar to the egg of a reptile or a bird.

Introduction: Birds and reptiles both belong to the phylum Chordata. Both are vertebrates.

An amniotic egg is found in reptiles, mammals, and birds. The animal that possesses an amniotic egg is known as amniotes. Amniotic eggs have amnion that protects the embryo. The embryo is surrounded by a fluid-filled membrane called amnion and the fluid is known as the amniotic fluid.

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Which of the following is an INCORRECT statement?   Question 6 options:   a)  The early embryo of a higher animal is never like a lower animal, but only like its early embryo.   b)  During the first three stages of development, blastomeres become smaller by way of each embryonic cleavage.   c)  The space inside of the neural tube will eventually become the space inside of the digestive system.   d)  A zygote results from the union of sperm and egg.
From a 24-hour chick embryo, provide the answers in the following:  Pairs of somites in a 24-hour chick embryo Germ layer/s that forms the head process What begins the formation head of process Germ layer/s that form the proamnion Explain why the notochord is not visible in areas where the somites are seen
Is a zygote a fertilized egg?

Chapter 34 Solutions

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