Question 1

Figure 51-2
Use the figure to answer the corresponding question(s).  
-Refer to Figure 51-2.The nervous system will develop from which structure?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  a structure not numbered in this figure 
A)  1 
B)  2 
C)  3 
D)  4 
E)  a structure not numbered in this figure E

Question 2

Amphibian eggs have large amounts of yolk at the __________ pole, and most metabolism takes place at the __________ pole.

Accepted Answer

A)  animal; vegetal 
B)  animal; animal 
C)  vegetal; vegetal 
D)  vegetal; animal 
E)  totipotent; telolecithal 
A)  animal; vegetal 
B)  animal; animal 
C)  vegetal; vegetal 
D)  vegetal; animal 
E)  totipotent; telolecithal D

Question 3

Identify two changes that occur at or shortly after birth that allow the neonate to live independently.

Accepted Answer

The neonate begins to breathe within a few seconds of birth as a result of carbon dioxide accumulating in the blood after the umbilical cord is cut.The lungs expand, and there is increased blood flow from the right ventricle to the pulmonary vessels.The foramen ovale closes.

Question 4

Which of the following statements concerning a blastodisc is false?

Accepted Answer

A)  It can be further divided into an upper epiblast and below that, the hypoblast. 
B)  It results from meroblastic cleavage. 
C)  It is found in isolecithal eggs. 
D)  It is a small disc of cytoplasm at the animal pole. 
E)  It is characteristic of cell division in bird eggs. 
A)  It can be further divided into an upper epiblast and below that, the hypoblast. 
B)  It results from meroblastic cleavage. 
C)  It is found in isolecithal eggs. 
D)  It is a small disc of cytoplasm at the animal pole. 
E)  It is characteristic of cell division in bird eggs.

Question 5

MATCHING
Match the stage of embryonic development with its description.
a.blastula
c.morula
b.gastrula
d.stage of organogenesis
-the neural crest arises during this stage

Accepted Answer

The answer of MATCHING
Match the stage of embryonic development with...

Question 6

A primitive groove is the equivalent of a:

Accepted Answer

A)  neural crest. 
B)  branchial groove. 
C)  blastodisc. 
D)  blastopore. 
E)  neural groove. 
A)  neural crest. 
B)  branchial groove. 
C)  blastodisc. 
D)  blastopore. 
E)  neural groove.

Question 7

MATCHING
Match the stage of embryonic development with its description.
a.blastula
c.morula
b.gastrula
d.stage of organogenesis
-the neural tube forms during this stage

Accepted Answer

The answer of MATCHING
Match the stage of embryonic development with...

Question 8

During an acrosome reaction, the acrosome:

Accepted Answer

A)  detaches, allowing the sperm to penetrate the egg. 
B)  releases enzymes that digest the outer layer of the egg. 
C)  secretes calcium ions, which cause the sperm to fuse with the egg. 
D)  releases bindin, which causes the sperm to bind to the egg. 
E)  secretes a chemical that attracts the egg to the sperm. 
A)  detaches, allowing the sperm to penetrate the egg. 
B)  releases enzymes that digest the outer layer of the egg. 
C)  secretes calcium ions, which cause the sperm to fuse with the egg. 
D)  releases bindin, which causes the sperm to bind to the egg. 
E)  secretes a chemical that attracts the egg to the sperm.

Question 9

Most invertebrates have:

Accepted Answer

A)  isolecithal eggs and meroblastic cleavage. 
B)  telolecithal eggs and meroblastic cleavage. 
C)  isolecithal eggs and holoblastic cleavage. 
D)  telolecithal eggs and holoblastic cleavage. 
E)  isolecithal eggs and radial cleavage. 
A)  isolecithal eggs and meroblastic cleavage. 
B)  telolecithal eggs and meroblastic cleavage. 
C)  isolecithal eggs and holoblastic cleavage. 
D)  telolecithal eggs and holoblastic cleavage. 
E)  isolecithal eggs and radial cleavage.

Question 10

Which the following does not occur in the egg following fertilization?

Accepted Answer

A)  Meiosis II is completed. 
B)  Microtubules are formed. 
C)  Calcium concentrations increase. 
D)  The acrosomal reaction occurs. 
E)  The cortical reaction occurs. 
A)  Meiosis II is completed. 
B)  Microtubules are formed. 
C)  Calcium concentrations increase. 
D)  The acrosomal reaction occurs. 
E)  The cortical reaction occurs.

Question 11

In echinoderms, gastrulation takes place through a primitive groove.
____________________

Accepted Answer

A) True 
 B)False

Question 12

Which of the following organisms exhibits meroblastic cleavage?

Accepted Answer

A)  echinoderms 
B)  amphibians 
C)  mollusks 
D)  annelids 
E)  birds 
A)  echinoderms 
B)  amphibians 
C)  mollusks 
D)  annelids 
E)  birds

Question 13

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

Accepted Answer

Concepts to Consider: Teratogens are dru

Question 14

Animal growth primarily occurs by an increase in the:

Accepted Answer

A)  number of tissues and organs. 
B)  number of cells. 
C)  types of cells produced. 
D)  number of cell functions. 
E)  number of cell shapes. 
A)  number of tissues and organs. 
B)  number of cells. 
C)  types of cells produced. 
D)  number of cell functions. 
E)  number of cell shapes.

Question 15

Figure 51-2
Use the figure to answer the corresponding question(s).  
-The structure labeled 3 in Figure 51-2 is the:

Accepted Answer

A)  archenteron. 
B)  endoderm. 
C)  mesoderm. 
D)  blastocoel. 
E)  ectoderm.. 
A)  archenteron. 
B)  endoderm. 
C)  mesoderm. 
D)  blastocoel. 
E)  ectoderm..

Question 16

Isolecithal eggs exhibit holoblastic cleavage.
____________________

Accepted Answer

A) True 
 B)False

Question 17

Which of the following statements about early embryonic development in humans is false?

Accepted Answer

A)  The embryo is moved along the oviduct by ciliary action and muscular contraction. 
B)  The embryo develops through the blastula stage while floating free in the uterus. 
C)  The embryo enters the uterus about 24 hours after fertilization. 
D)  Early division of the embryo occurs in the oviduct. 
E)  Implantation of the embryo occurs about seven days after fertilization. 
A)  The embryo is moved along the oviduct by ciliary action and muscular contraction. 
B)  The embryo develops through the blastula stage while floating free in the uterus. 
C)  The embryo enters the uterus about 24 hours after fertilization. 
D)  Early division of the embryo occurs in the oviduct. 
E)  Implantation of the embryo occurs about seven days after fertilization.

Question 18

Monozygotic twins:

Accepted Answer

A)  occur when two eggs are ovulated. 
B)  may be of different sexes. 
C)  have different sets of genes. 
D)  are called identical twins. 
E)  result from the fertilization of two sperm cells. 
A)  occur when two eggs are ovulated. 
B)  may be of different sexes. 
C)  have different sets of genes. 
D)  are called identical twins. 
E)  result from the fertilization of two sperm cells.

Question 19

A teratogen is a drug that:

Accepted Answer

A)  increases fertility. 
B)  prevents fertilization. 
C)  prevents implantation of the embryo in the endometrium. 
D)  induces labor. 
E)  interferes with morphogenesis. 
A)  increases fertility. 
B)  prevents fertilization. 
C)  prevents implantation of the embryo in the endometrium. 
D)  induces labor. 
E)  interferes with morphogenesis.

Question 20

In the amphibian embryo, the first cleavage bisects the gray crescent.
____________________

Accepted Answer

A) True 
 B)False

Exam 51: Animal Development

Figure 51-2 Use the figure to answer the corresponding question(s). -Refer to Figure 51-2.The nervous system will develop from which structure?

Amphibian eggs have large amounts of yolk at the __________ pole, and most metabolism takes place at the __________ pole.

Identify two changes that occur at or shortly after birth that allow the neonate to live independently.

Which of the following statements concerning a blastodisc is false?

MATCHING Match the stage of embryonic development with its description. a.blastula c.morula b.gastrula d.stage of organogenesis -the neural crest arises during this stage

A primitive groove is the equivalent of a:

MATCHING Match the stage of embryonic development with its description. a.blastula c.morula b.gastrula d.stage of organogenesis -the neural tube forms during this stage

During an acrosome reaction, the acrosome:

Most invertebrates have:

Which the following does not occur in the egg following fertilization?

In echinoderms, gastrulation takes place through a primitive groove. ____________________

Which of the following organisms exhibits meroblastic cleavage?

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

Animal growth primarily occurs by an increase in the:

Figure 51-2 Use the figure to answer the corresponding question(s). -The structure labeled 3 in Figure 51-2 is the:

Isolecithal eggs exhibit holoblastic cleavage. ____________________

Which of the following statements about early embryonic development in humans is false?

Monozygotic twins:

A teratogen is a drug that:

In the amphibian embryo, the first cleavage bisects the gray crescent. ____________________

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

Amphibian eggs have large amounts of yolk at the pole, and most metabolism takes place at the pole.