Question 1

The function of structure 1 is to:

Accepted Answer

A) form the maternal component of the placenta. 
B) provide nutrients to the embryo before implantation. 
C) enclose the embryo in a liquid environment. 
D) store metabolic wastes. 
E) exchange nutrients and wastes between mother and embryo. 
A) form the maternal component of the placenta. 
B) provide nutrients to the embryo before implantation. 
C) enclose the embryo in a liquid environment. 
D) store metabolic wastes. 
E) exchange nutrients and wastes between mother and embryo. E

Question 2

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

Accepted Answer

In direct development, the embryo develops to the point of resembling a small adult. In indirect development, the early forms of the organism do not look like the adult form and must go through a metamorphosis to become an adult.

Question 3

The ________ is the baby's contribution to the placenta.

Accepted Answer

chorion

Question 4

Transplanting embryonic eye tissue into the back of a developing tadpole will cause a lens to grow on the back of the tadpole. This is an example of:

Accepted Answer

A) metamorphosis. 
B) programmed cell death. 
C) induction. 
D) cleavage. 
E) gastrulation. 
A) metamorphosis. 
B) programmed cell death. 
C) induction. 
D) cleavage. 
E) gastrulation.

Question 5

A developing human is considered an embryo after ________ weeks.

Accepted Answer

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

Question 6

Why should a woman who plans to become pregnant notify her health care provider of any medications she is taking?

Accepted Answer

Many medications can

Question 7

Human embryos differ from bird embryos in that:

Accepted Answer

A) bird embryos have an extra membrane, the allantois, that is not found in human embryos. 
B) human embryos have no yolk sac. 
C) human embryos have a yolk sac, but it contains no yolk. 
D) human embryos do not develop into a primitive streak stage. 
E) bird embryos develop a very different body structure than the adult. 
A) bird embryos have an extra membrane, the allantois, that is not found in human embryos. 
B) human embryos have no yolk sac. 
C) human embryos have a yolk sac, but it contains no yolk. 
D) human embryos do not develop into a primitive streak stage. 
E) bird embryos develop a very different body structure than the adult.

Question 8

________ diffuse(s)from fetal blood to maternal blood in the placenta.

Accepted Answer

A) Oxygen 
B) Wastes 
C) Alcohol 
D) Infectious organisms 
E) Nutrients 
A) Oxygen 
B) Wastes 
C) Alcohol 
D) Infectious organisms 
E) Nutrients

Question 9

If an embryo divides into three during the morula stage:

Accepted Answer

A) the embryos will die. 
B) the embryos will develop severe birth defects due to missing genes. 
C) normal identical triplets will be born. 
D) three distinctly different embryos will develop, depending on which homeoboxes went with which cell group. 
E) the embryos will develop, but they may be missing some organs based on which germ layers were transferred with each section. 
A) the embryos will die. 
B) the embryos will develop severe birth defects due to missing genes. 
C) normal identical triplets will be born. 
D) three distinctly different embryos will develop, depending on which homeoboxes went with which cell group. 
E) the embryos will develop, but they may be missing some organs based on which germ layers were transferred with each section.

Question 10

If a cell divides by mitosis so that one cell eventually becomes part of the brain and the other cell becomes part of a salivary gland, the cells have:

Accepted Answer

A) lost genes. 
B) increased their genetic variability. 
C) diffused. 
D) taken up genes from surrounding cells. 
E) differentiated. 
A) lost genes. 
B) increased their genetic variability. 
C) diffused. 
D) taken up genes from surrounding cells. 
E) differentiated.

Question 11

If your roommate smokes and she gets pregnant, what dangers would you warn her about?

Accepted Answer

Smoking during pregnancy leads

Question 12

________ is the developmental event that results in the formation of a primitive gut and the three tissue layers.

Accepted Answer

A) Blastulation 
B) Metamorphosis 
C) Gastrulation 
D) Cleavage 
E) Induction 
A) Blastulation 
B) Metamorphosis 
C) Gastrulation 
D) Cleavage 
E) Induction

Question 13

The nervous system develops from the endoderm. True or False?

Accepted Answer

A) True 
 B)False

Question 14

Suppose a mutant fish embryo does not form an endoderm, yet the embryo continues to develop. Which of the following structures might the embryo lack?

Accepted Answer

A) skin 
B) heart 
C) nervous system 
D) stomach 
E) kidneys 
A) skin 
B) heart 
C) nervous system 
D) stomach 
E) kidneys

Question 15

In a bird egg, the ________ provides the watery environment in which the embryo develops.

Accepted Answer

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

Question 16

The blastopore forms during gastrulation. True or False?

Accepted Answer

A) True 
 B)False

Question 17

Which extraembryonic membrane lies immediately beneath the shell of a reptile embryo?

Accepted Answer

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

Question 18

The birth defect spina bifida results in part of the spinal cord lying outside of the body. This defect is due to abnormal development of the:

Accepted Answer

A) neural tube. 
B) gill grooves. 
C) allantois. 
D) placenta. 
E) embryonic disc. 
A) neural tube. 
B) gill grooves. 
C) allantois. 
D) placenta. 
E) embryonic disc.

Question 19

A ________ is the immature stage of an animal that undergoes indirect development.

Accepted Answer

The answer of A ________ is the immature stage of...

Question 20

The most rapid differentiation in an embryo occurs during the first two months of pregnancy. True or False?

Accepted Answer

A) True 
 B)False

Exam 42: Animal Development

The function of structure 1 is to:

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

The ________ is the baby's contribution to the placenta.

Transplanting embryonic eye tissue into the back of a developing tadpole will cause a lens to grow on the back of the tadpole. This is an example of:

A developing human is considered an embryo after ________ weeks.

Why should a woman who plans to become pregnant notify her health care provider of any medications she is taking?

Human embryos differ from bird embryos in that:

________ diffuse(s)from fetal blood to maternal blood in the placenta.

If an embryo divides into three during the morula stage:

If a cell divides by mitosis so that one cell eventually becomes part of the brain and the other cell becomes part of a salivary gland, the cells have:

If your roommate smokes and she gets pregnant, what dangers would you warn her about?

________ is the developmental event that results in the formation of a primitive gut and the three tissue layers.

The nervous system develops from the endoderm. True or False?

Suppose a mutant fish embryo does not form an endoderm, yet the embryo continues to develop. Which of the following structures might the embryo lack?

In a bird egg, the ________ provides the watery environment in which the embryo develops.

The blastopore forms during gastrulation. True or False?

Which extraembryonic membrane lies immediately beneath the shell of a reptile embryo?

The birth defect spina bifida results in part of the spinal cord lying outside of the body. This defect is due to abnormal development of the:

A ________ is the immature stage of an animal that undergoes indirect development.

The most rapid differentiation in an embryo occurs during the first two months of pregnancy. True or False?

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

The Continuity of Life: Cellular 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 Amidst 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

How Do Ecosystems Work

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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