Question 1

The __________are finger-like extensions from the fetal membranes that extend into the endometrium.

Accepted Answer

The answer of The __________are finger-like extensions from the fetal...

Question 2

The small, hollow ball of cells in early development is the zygote.

Accepted Answer

A) True 
 B)False

Question 3

Labor and delivery are an example of a__________ feedback loop.

Accepted Answer

The answer of Labor and delivery are an example of...

Question 4

-Blood cells form from structure

Accepted Answer

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

Question 5

Yolk sacs are found only in animals with shelled eggs.

Accepted Answer

A) True 
 B)False

Question 6

The last 7 months of pregnancy are devoted to

Accepted Answer

A)  formation of the brain. 
B)  formation of tissue layers. 
C)  growth. 
D)  organization of organs into organ systems. 
E)  formation of major organs. 
A)  formation of the brain. 
B)  formation of tissue layers. 
C)  growth. 
D)  organization of organs into organ systems. 
E)  formation of major organs.

Question 7

A mad scientist decides to start combining embryos and see what develops. He takes cells from the blastula of a frog with blue skin and transplants them into the blastula of a yellow -skinned frog. The embryo receiving the cells develops blue cells in its brain and spinal cord. The scientist must have transplanted the cells into the___________ of the recipient embryo.

Accepted Answer

A)  mesoderm 
B)  allantois 
C)  ectoderm 
D)  endoderm 
E)  yolk sac 
A)  mesoderm 
B)  allantois 
C)  ectoderm 
D)  endoderm 
E)  yolk sac

Question 8

Amphibians, reptiles, and mammals pass through embryonic stages in which they have tails and webbed fingers and toes.

Accepted Answer

A) True 
 B)False

Question 9

At which stage is the human embryo most susceptible to toxic substances?

Accepted Answer

A)  During organogenesis 
B)  During the last trimester 
C)  During cleavage 
D)  During the fourth and fifth months 
E)  Just before birth 
A)  During organogenesis 
B)  During the last trimester 
C)  During cleavage 
D)  During the fourth and fifth months 
E)  Just before birth

Question 10

In placental organisms, the __________of the embryo merges with the endometrial lining of the uterus to form the placenta.

Accepted Answer

A)  amnion 
B)  chorion 
C)  allantois 
D)  yolk sac 
E)  blastopore 
A)  amnion 
B)  chorion 
C)  allantois 
D)  yolk sac 
E)  blastopore

Question 11

During development, some cells __________, or specialize in both structure and function.

Accepted Answer

The answer of During development, some cells __________, or specialize...

Question 12

The mother?s part of the placenta is derived from the__________ .

Accepted Answer

The answer of The mother?s part of the placenta is...

Question 13

Most fetuses can survive outside the womb after a minimum of __________weeks.

Accepted Answer

A)  45 
B)  38 
C)  32 
D)  15 
E)  20 
A)  45 
B)  38 
C)  32 
D)  15 
E)  20

Question 14

During mammalian development, a

Accepted Answer

A)  morula becomes a blastula. 
B)  morula becomes gastrula. 
C)  gastrula becomes a morula. 
D)  zygote becomes a blastula. 
E)  blastula becomes a zygote. 
A)  morula becomes a blastula. 
B)  morula becomes gastrula. 
C)  gastrula becomes a morula. 
D)  zygote becomes a blastula. 
E)  blastula becomes a zygote.

Question 15

As a morula, the embryo consists of

Accepted Answer

A)  three differentiated layers of cells. 
B)  a solid mass of cells, each the size of the zygote. 
C)  a hollow ball of cells. 
D)  cells that have different DNA content. 
E)  a cluster of cells that are much larger than normal cells. 
A)  three differentiated layers of cells. 
B)  a solid mass of cells, each the size of the zygote. 
C)  a hollow ball of cells. 
D)  cells that have different DNA content. 
E)  a cluster of cells that are much larger than normal cells.

Question 16

A__________ is the sexually immature feeding stage of an animal that undergoes indirect development.

Accepted Answer

The answer of A__________ is the sexually immature feeding stage...

Question 17

How does direct development of an embryo differ from indirect development?

Accepted Answer

In direct development, the embryo develo

Question 18

A human embryo is known as a fetus after__________ weeks.

Accepted Answer

A)  16 
B)  8 
C)  2 
D)  4 
E)  12 
A)  16 
B)  8 
C)  2 
D)  4 
E)  12

Question 19

__________is caused when a woman drinks heavily throughout her pregnancy.

Accepted Answer

Fetal alco

Question 20

After induction occurs, the

Accepted Answer

A)  fate of each cell is permanently fixed. 
B)  cells have different genes. 
C)  DNA of the mitochondria differentiates into new genes. 
D)  transcription of all genes stops. 
A)  fate of each cell is permanently fixed. 
B)  cells have different genes. 
C)  DNA of the mitochondria differentiates into new genes. 
D)  transcription of all genes stops.

Exam 43: Animal Development

The __________are finger-like extensions from the fetal membranes that extend into the endometrium.

The small, hollow ball of cells in early development is the zygote.

Labor and delivery are an example of a__________ feedback loop.

-Blood cells form from structure

Yolk sacs are found only in animals with shelled eggs.

The last 7 months of pregnancy are devoted to

Amphibians, reptiles, and mammals pass through embryonic stages in which they have tails and webbed fingers and toes.

At which stage is the human embryo most susceptible to toxic substances?

In placental organisms, the __________of the embryo merges with the endometrial lining of the uterus to form the placenta.

During development, some cells __________, or specialize in both structure and function.

The mother?s part of the placenta is derived from the__________ .

Most fetuses can survive outside the womb after a minimum of __________weeks.

During mammalian development, a

As a morula, the embryo consists of

A__________ is the sexually immature feeding stage of an animal that undergoes indirect development.

How does direct development of an embryo differ from indirect development?

A human embryo is known as a fetus after__________ weeks.

__________is caused when a woman drinks heavily throughout her pregnancy.

After induction occurs, the

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

Cellular Reproduction

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

DNA: The Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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