Question 1

An embryo having a blastodisc exhibits holoblastic cleavage.

Accepted Answer

A) True 
 B)False

Question 2

Match between columns
                        Premises: Keeps embryo moist

Accepted Answer

The Answer of Allantois and Yolk sac and Amnion and is...

Question 3

The percentage of twins being born has increased in the past 20 years because of

Accepted Answer

A)  the increased use of fertility inducing drugs. 
B)  increases in hospital care. 
C)  the desire of more couples to have twins. 
D)  the increased use of thalidomide. 
E)  the increased incidence of German measles. 
A)  the increased use of fertility inducing drugs. 
B)  increases in hospital care. 
C)  the desire of more couples to have twins. 
D)  the increased use of thalidomide. 
E)  the increased incidence of German measles.

Question 4

The chorion is the extraembryonic membrane closest to the embryo proper.

Accepted Answer

A) True 
 B)False

Question 5

The blastopore is the opening to the blastocoel.

Accepted Answer

A) True 
 B)False

Question 6

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?

Accepted Answer

A)  1 
B)  2 
C)  5 
D)  6 
E)  8 
A)  1 
B)  2 
C)  5 
D)  6 
E)  8

Question 7

Which statements about the notochord is FALSE?

Accepted Answer

A)  It is lost when it is replaced by the spinal cord. 
B)  It develops in chordate embryos. 
C)  It develops from mesodermal tissue. 
D)  It induces formation of the neural plate. 
E)  It grows along the longitudinal axis of the organism. 
A)  It is lost when it is replaced by the spinal cord. 
B)  It develops in chordate embryos. 
C)  It develops from mesodermal tissue. 
D)  It induces formation of the neural plate. 
E)  It grows along the longitudinal axis of the organism.

Question 8

Following cleavage of the zygote, although the cell number ____, the embryo ______ in size.

Accepted Answer

A)  increases; decreases 
B)  increases; increases 
C)  decreases; increases 
D)  decreases; decreases 
E)  increases; does not increase 
A)  increases; decreases 
B)  increases; increases 
C)  decreases; increases 
D)  decreases; decreases 
E)  increases; does not increase

Question 9

The term "archenteron" refers to the developing

Accepted Answer

A)  gut. 
B)  lung. 
C)  notochord. 
D)  nerve tube. 
E)  skin. 
A)  gut. 
B)  lung. 
C)  notochord. 
D)  nerve tube. 
E)  skin.

Question 10

Which of the following indicates the correct sequence of mammalian egg coverings, beginning at the outside and moving inward?

Accepted Answer

A)  Plasma membrane, jelly coat, zona pellucida 
B)  Zona pellucida, vitelline envelope, plasma membrane 
C)  Vitelline envelope, plasma membrane, jelly coat 
D)  Granulosa cells, zona pellucida, plasma membrane 
E)  Zona pellucida, granulosa cells, plasma membrane 
A)  Plasma membrane, jelly coat, zona pellucida 
B)  Zona pellucida, vitelline envelope, plasma membrane 
C)  Vitelline envelope, plasma membrane, jelly coat 
D)  Granulosa cells, zona pellucida, plasma membrane 
E)  Zona pellucida, granulosa cells, plasma membrane

Question 11

Briefly explain the relationship between nuclear equivalence and differential gene expression.

Accepted Answer

In nuclear equivalence, no genetic chang

Question 12

Figure 51-1 ​
 
​
What type of cleavage pattern is represented in the accompanying figure?

Accepted Answer

A)  Holoblastic and radial 
B)  Holoblastic and spiral 
C)  Meroblastic and radial 
D)  Meroblastic and spiral 
E)  Holoblastic and mosaic 
A)  Holoblastic and radial 
B)  Holoblastic and spiral 
C)  Meroblastic and radial 
D)  Meroblastic and spiral 
E)  Holoblastic and mosaic

Question 13

Match between columns
                        Premises: Nervous system

Accepted Answer

The Answer of Ectoderm and Endoderm and Mesoderm is...

Question 14

Match between columns
                        Premises: A hollow ball of cells with a fluid filled cavity

Accepted Answer

The Answer of Blastula and Stage of organogenesis and Gastrula is...

Question 15

The blastula can be described as an embryo consisting of a hollow sphere of cells.

Accepted Answer

A) True 
 B)False

Question 16

Identify two environmental factors that can have an impact on the development of a fetus and describe their effect on the fetus.

Accepted Answer

Concepts to Consider: Teratogens are dru

Question 17

Match between columns
                        Premises: Lining of digestive tube

Accepted Answer

The Answer of Ectoderm and Endoderm and Mesoderm is...

Question 18

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

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 19

The gray crescent region of the amphibian zygote is thought to contain

Accepted Answer

A)  growth factors and developmental determinants. 
B)  hormones and ribosomes. 
C)  yolk and dark pigment granules. 
D)  mitochondria and ribosomes. 
E)  neurotransmitters and hormones. 
A)  growth factors and developmental determinants. 
B)  hormones and ribosomes. 
C)  yolk and dark pigment granules. 
D)  mitochondria and ribosomes. 
E)  neurotransmitters and hormones.

Question 20

Match between columns
                        Premises: Stores nitrogenous waste

Accepted Answer

The Answer of Yolk sac and Chorion and Amnion and is...

Exam 51: Animal Development

An embryo having a blastodisc exhibits holoblastic cleavage.

The percentage of twins being born has increased in the past 20 years because of

The chorion is the extraembryonic membrane closest to the embryo proper.

The blastopore is the opening to the blastocoel.

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?

Which statements about the notochord is FALSE?

Following cleavage of the zygote, although the cell number ____, the embryo ______ in size.

The term "archenteron" refers to the developing

Which of the following indicates the correct sequence of mammalian egg coverings, beginning at the outside and moving inward?

Briefly explain the relationship between nuclear equivalence and differential gene expression.

Figure 51-1 ​ ​ What type of cleavage pattern is represented in the accompanying figure?

The blastula can be described as an embryo consisting of a hollow sphere of cells.

Identify two environmental factors that can have an impact on the development of a fetus and describe their effect on the fetus.

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

The gray crescent region of the amphibian zygote is thought to contain

A View of Life

Atoms and Molecules: the Chemical Basis of Life

The Chemistry of Life: Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

How Cells Make Atp: Energy-Releasing Pathways

Photosynthesis: Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

DNA: The Carrier of Genetic Information

Gene Expression

Gene Regulation

DNA Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity: Systematics

Viruses and Subviral Agents

Bacteria and Archaea

Protists

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure, Growth, and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function: an Introduction

Protection, Support, and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System: Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Behavior

Introduction to Ecology: Population Ecology

Community Ecology

Ecosystems and the Biosphere

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

Filters

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?

Following cleavage of the zygote, although the cell number , the embryo __ in size.

Figure 51-1 What type of cleavage pattern is represented in the accompanying figure?

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