Question 1

Match each term with its definition.
-blastodisc

Accepted Answer

A) undifferentiated muscle cells 
B) pigmented layer of cytoplasm opposite from point of entry of sperm 
C) rounded layer of cells at the surface of yolk in birds 
D) solid rod of tissue that is involved in neurulation 
E) fingerlike extensions into the endometrium
F)clear fibrous protein
G)programmed cell death
H)event when a group of cells influences a nearby group of cells 
A) undifferentiated muscle cells 
B) pigmented layer of cytoplasm opposite from point of entry of sperm 
C) rounded layer of cells at the surface of yolk in birds 
D) solid rod of tissue that is involved in neurulation 
E) fingerlike extensions into the endometrium
F)clear fibrous protein
G)programmed cell death
H)event when a group of cells influences a nearby group of cells C

Question 2

What are the primary tissue layers from which the chorion is produced?

Accepted Answer

A) the allantois and the allantoic membrane 
B) the ectoderm and the mesoderm 
C) the ectoderm and the endoderm 
D) the endoderm and the mesoderm 
A) the allantois and the allantoic membrane 
B) the ectoderm and the mesoderm 
C) the ectoderm and the endoderm 
D) the endoderm and the mesoderm B

Question 3

Cells that undergo apoptosis are essential to the organism throughout its life.

Accepted Answer

A) True 
 B)False  False

Question 4

What is the immune function of the placenta in human embryo development?

Accepted Answer

Because the placenta prevents fetal bloo

Question 5

In humans, what happens when the SRY gene of the Y chromosome becomes active at about week 7 of embryo development?

Accepted Answer

A) The Müllerian and Wolffian ducts both develop into female reproductive structures. 
B) The Müllerian ducts develop into male reproductive structures and the Wolffian ducts disappear. 
C) The Müllerian ducts disappear and the Wolffian ducts develop into male reproductive structures. 
D) The Müllerian and Wolffian ducts both develop into male reproductive structures. 
A) The Müllerian and Wolffian ducts both develop into female reproductive structures. 
B) The Müllerian ducts develop into male reproductive structures and the Wolffian ducts disappear. 
C) The Müllerian ducts disappear and the Wolffian ducts develop into male reproductive structures. 
D) The Müllerian and Wolffian ducts both develop into male reproductive structures.

Question 6

Which cells stop dividing once they are fully formed?

Accepted Answer

A) bone cells 
B) nerve cells in the brain 
C) liver cells 
D) cheek cells 
A) bone cells 
B) nerve cells in the brain 
C) liver cells 
D) cheek cells

Question 7

Match each term with its definition.
-apoptosis

Accepted Answer

A) undifferentiated muscle cells 
B) pigmented layer of cytoplasm opposite from point of entry of sperm 
C) rounded layer of cells at the surface of yolk in birds 
D) solid rod of tissue that is involved in neurulation 
E) fingerlike extensions into the endometrium
F)clear fibrous protein
G)programmed cell death
H)event when a group of cells influences a nearby group of cells 
A) undifferentiated muscle cells 
B) pigmented layer of cytoplasm opposite from point of entry of sperm 
C) rounded layer of cells at the surface of yolk in birds 
D) solid rod of tissue that is involved in neurulation 
E) fingerlike extensions into the endometrium
F)clear fibrous protein
G)programmed cell death
H)event when a group of cells influences a nearby group of cells

Question 8

Which sequence places the three primary cell layers of an embryo in order from superficial to deep?

Accepted Answer

A) endoderm, mesoderm, ectoderm 
B) mesoderm, ectoderm, endoderm 
C) ectoderm, mesoderm, endoderm 
D) ectoderm, endoderm, mesoderm 
A) endoderm, mesoderm, ectoderm 
B) mesoderm, ectoderm, endoderm 
C) ectoderm, mesoderm, endoderm 
D) ectoderm, endoderm, mesoderm

Question 9

Put the following mechanisms of development in the order they occur.
-sixth mechanism

Accepted Answer

A) cell movements 
B) determination 
C) differentiation 
D) induction 
E) mitotic cell divisions
F)selective cell adhesions 
A) cell movements 
B) determination 
C) differentiation 
D) induction 
E) mitotic cell divisions
F)selective cell adhesions

Question 10

Which organisms have a pattern of gastrulation that is the most similar to humans?

Accepted Answer

A) the birds 
B) the zebra fishs 
C) the sea urchins 
D) the amphibians 
A) the birds 
B) the zebra fishs 
C) the sea urchins 
D) the amphibians

Question 11

Put the following mechanisms of development in the order they occur.
-first mechanism

Accepted Answer

A) cell movements 
B) determination 
C) differentiation 
D) induction 
E) mitotic cell divisions
F)selective cell adhesions 
A) cell movements 
B) determination 
C) differentiation 
D) induction 
E) mitotic cell divisions
F)selective cell adhesions

Question 12

Why is it important that parents provide a place in which the embryo can develop?

Accepted Answer

A) to minimize favourable conditions for the embryo's growth and development 
B) to minimize the embryo's exposure to predators and parasites 
C) to maximize the embryo's exposure to environment 
D) to minimize the embryo's exposure to environment 
A) to minimize favourable conditions for the embryo's growth and development 
B) to minimize the embryo's exposure to predators and parasites 
C) to maximize the embryo's exposure to environment 
D) to minimize the embryo's exposure to environment

Question 13

Match each term with its definition.
-myoblast

Accepted Answer

A) undifferentiated muscle cells 
B) pigmented layer of cytoplasm opposite from point of entry of sperm 
C) rounded layer of cells at the surface of yolk in birds 
D) solid rod of tissue that is involved in neurulation 
E) fingerlike extensions into the endometrium
F)clear fibrous protein
G)programmed cell death
H)event when a group of cells influences a nearby group of cells 
A) undifferentiated muscle cells 
B) pigmented layer of cytoplasm opposite from point of entry of sperm 
C) rounded layer of cells at the surface of yolk in birds 
D) solid rod of tissue that is involved in neurulation 
E) fingerlike extensions into the endometrium
F)clear fibrous protein
G)programmed cell death
H)event when a group of cells influences a nearby group of cells

Question 14

Match each term to its definition.
-blastocoel

Accepted Answer

A) fluid-filled cavity within the blastomere 
B) stage in which an embryo has three tissue layers 
C) solid ball of blastomeres 
D) opening that eventually becomes the anus 
E) process that involves an increase in number of cells, but not an increase in mass
F)early stage in formation of the nervous system
G)second stage of cleavage; a formed hollow cavity 
A) fluid-filled cavity within the blastomere 
B) stage in which an embryo has three tissue layers 
C) solid ball of blastomeres 
D) opening that eventually becomes the anus 
E) process that involves an increase in number of cells, but not an increase in mass
F)early stage in formation of the nervous system
G)second stage of cleavage; a formed hollow cavity

Question 15

Match each term to its definition.
-morula

Accepted Answer

A) fluid-filled cavity within the blastomere 
B) stage in which an embryo has three tissue layers 
C) solid ball of blastomeres 
D) opening that eventually becomes the anus 
E) process that involves an increase in number of cells, but not an increase in mass
F)early stage in formation of the nervous system
G)second stage of cleavage; a formed hollow cavity 
A) fluid-filled cavity within the blastomere 
B) stage in which an embryo has three tissue layers 
C) solid ball of blastomeres 
D) opening that eventually becomes the anus 
E) process that involves an increase in number of cells, but not an increase in mass
F)early stage in formation of the nervous system
G)second stage of cleavage; a formed hollow cavity

Question 16

At what point in development is a human embryo considered to be a fetus?

Accepted Answer

A) at 10 weeks 
B) at 8 weeks 
C) at 4 weeks 
D) at 2 weeks 
A) at 10 weeks 
B) at 8 weeks 
C) at 4 weeks 
D) at 2 weeks

Question 17

Which statement describes the distribution of yolk in an egg?

Accepted Answer

A) The vegetal pole does not form internal structures. 
B) The vegetal pole does not form the posterior end of the animal. 
C) Polarity does not relate to development of body axes. 
D) The animal pole does not form the animal's gut. 
A) The vegetal pole does not form internal structures. 
B) The vegetal pole does not form the posterior end of the animal. 
C) Polarity does not relate to development of body axes. 
D) The animal pole does not form the animal's gut.

Question 18

Identify each labelled part of the illustration.  
-gastrulation

Accepted Answer

The answer of Identify each labelled part of the illustration....

Question 19

Identify each labelled part of the illustration.  
-yolk sac

Accepted Answer

The answer of Identify each labelled part of the illustration....

Question 20

Identify each labelled part of the illustration.  
-amnion

Accepted Answer

The answer of Identify each labelled part of the illustration....

Exam 42: Animal Development

Match each term with its definition. -blastodisc

What are the primary tissue layers from which the chorion is produced?

Cells that undergo apoptosis are essential to the organism throughout its life.

What is the immune function of the placenta in human embryo development?

In humans, what happens when the SRY gene of the Y chromosome becomes active at about week 7 of embryo development?

Which cells stop dividing once they are fully formed?

Match each term with its definition. -apoptosis

Which sequence places the three primary cell layers of an embryo in order from superficial to deep?

Put the following mechanisms of development in the order they occur. -sixth mechanism

Which organisms have a pattern of gastrulation that is the most similar to humans?

Put the following mechanisms of development in the order they occur. -first mechanism

Why is it important that parents provide a place in which the embryo can develop?

Match each term with its definition. -myoblast

Match each term to its definition. -blastocoel

Match each term to its definition. -morula

At what point in development is a human embryo considered to be a fetus?

Which statement describes the distribution of yolk in an egg?

Identify each labelled part of the illustration. -gastrulation

Identify each labelled part of the illustration. -yolk sac

Identify each labelled part of the illustration. -amnion

Light and Life

The Cell: an Overview

Defining Life and Its Origins

Energy and Enzymes

Cell Membranes and Signalling

Cellular Respiration

Photosynthesis

Cell Cycles

Genetic Recombination

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

Dna Structure, Replication, and Organization

Gene Structure and Expression

Control of Gene Expression

Dna Technologies

Genomes and Proteomes

Evolution: the Development of the Theory

Microevolution: Changes Within Populations

Species and Macroevolution

Understanding the History of Life on Earth

Humans and Evolution

Bacteria and Archaea

Viruses, Viroids, and Prions: Infectious Biological Particles

Protists

Fungi

Plants

Diversity of Animals 1: Sponges, Radiata, Platyhelminthes, and Protostomes

Diversity of Animals 2: Deuterostomes: Vertebrates and Their Closest Relatives

Population Ecology

Population Interactions and Community Ecology

Ecosystems

Conservation of Biodiversity

Putting Selection to Work

Organization of the Plant Body

Transport in Plants

Reproduction and Development in Flowering Plants

Plant Nutrition

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Transport in Animals: the Circulatory System

Reproduction in Animals

Control of Animal Processes: Neural Control

Control of Animal Processes: Neural Control

Control of Animal Processes: Neural Integration

Muscles, Skeletons, and Body Movements

Animal Behaviour

Animal Nutrition

Gas Exchange: the Respiratory System

Regulating the Internal Environment

Defences Against Disease

Conservation and Evolutionary Physiology

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