Question 1

Which structure is the most immediate precursor of the brain?

Accepted Answer

A)  Neural tube 
B)  Neural groove 
C)  Neural crest 
D)  Neural folds 
E)  Neural plate 
A)  Neural tube 
B)  Neural groove 
C)  Neural crest 
D)  Neural folds 
E)  Neural plate

Question 2

Figure 51-4 ​
 
​
Refer to the accompanying figure. Which structure gives rise to the spinal cord?

Accepted Answer

A)  1 
B)  2 
C)  5 
D)  8 
E)  9 
A)  1 
B)  2 
C)  5 
D)  8 
E)  9

Question 3

A human embryo is capable of movement and has gonads that are distinguishable as either testes or ovaries by the end of the

Accepted Answer

A)  second week. 
B)  fourth week. 
C)  sixth week. 
D)  eighth week. 
E)  first trimester. 
A)  second week. 
B)  fourth week. 
C)  sixth week. 
D)  eighth week. 
E)  first trimester.

Question 4

In amphibian development, the blastula consists of many small cells in the _____ hemisphere and fewer but larger cells in the ______ hemisphere.

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

Question 5

Match between columns
                        Premises: Contains an archenteron

Accepted Answer

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

Question 6

Programmed cell death is called apoptosis.

Accepted Answer

A) True 
 B)False

Question 7

Figure 51-3 ​
 
​
Refer to the accompanying figure. The amnion 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 8

The fast block to polyspermy involves the

Accepted Answer

A)  release of inhibitors of acrosomal enzymes. 
B)  synthesis of a new sperm-resistant membrane. 
C)  accumulation of calcium ions in the acrosome. 
D)  opening of ion channels that change the polarity of the egg membrane. 
E)  destruction of excess bindin receptors on the sperm. 
A)  release of inhibitors of acrosomal enzymes. 
B)  synthesis of a new sperm-resistant membrane. 
C)  accumulation of calcium ions in the acrosome. 
D)  opening of ion channels that change the polarity of the egg membrane. 
E)  destruction of excess bindin receptors on the sperm.

Question 9

Which of the following statements about fertilization is TRUE?

Accepted Answer

A)  Fertilization restores the haploid chromosome number. 
B)  Fertilization stimulates the initiation of development. 
C)  Fertilization cannot determine the sex of the offspring. 
D)  Fertilization permits the formation of gametes with new genetic combinations. 
E)  In fertilization, a sperm fuses with an ovum to produce an embryo. 
A)  Fertilization restores the haploid chromosome number. 
B)  Fertilization stimulates the initiation of development. 
C)  Fertilization cannot determine the sex of the offspring. 
D)  Fertilization permits the formation of gametes with new genetic combinations. 
E)  In fertilization, a sperm fuses with an ovum to produce an embryo.

Question 10

Briefly explain how cell differentiation relates to pattern formation an animal.

Accepted Answer

Cell differentiation is the process by w

Question 11

Embryonic mesoderm gives rise to

Accepted Answer

A)  muscle. 
B)  the lining of the digestive tract. 
C)  the nervous system. 
D)  sense organs. 
E)  lining of the respiratory system. 
A)  muscle. 
B)  the lining of the digestive tract. 
C)  the nervous system. 
D)  sense organs. 
E)  lining of the respiratory system.

Question 12

Human chorionic gonadotropin signals the placenta to produce large amounts of estrogen and progesterone.

Accepted Answer

A) True 
 B)False

Question 13

Match between columns
                        Premises: The formation of a primitive groove begins this stage

Accepted Answer

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

Question 14

The trophoblast secretes ____, which signals the corpus luteum that pregnancy has begun.

Accepted Answer

A)  estrogen 
B)  a gray crescent 
C)  progesterone 
D)  hCG 
E)  an enzyme 
A)  estrogen 
B)  a gray crescent 
C)  progesterone 
D)  hCG 
E)  an enzyme

Question 15

During capacitation, sperm become mature.

Accepted Answer

A) True 
 B)False

Question 16

Figure 51-1 ​
 
​
Which of the stages or structures in the accompanying figure was formed by the process of gastrulation?

Accepted Answer

A)  1 
B)  f 
C)  g 
D)  3 
E)  5 
A)  1 
B)  f 
C)  g 
D)  3 
E)  5

Question 17

Embryonic mesoderm forms the

Accepted Answer

A)  epidermis. 
B)  digestive tract lining. 
C)  pituitary gland. 
D)  excretory system. 
E)  nervous system. 
A)  epidermis. 
B)  digestive tract lining. 
C)  pituitary gland. 
D)  excretory system. 
E)  nervous system.

Exam 51: Animal Development

Which structure is the most immediate precursor of the brain?

Figure 51-4 ​ ​ Refer to the accompanying figure. Which structure gives rise to the spinal cord?

A human embryo is capable of movement and has gonads that are distinguishable as either testes or ovaries by the end of the

In amphibian development, the blastula consists of many small cells in the _____ hemisphere and fewer but larger cells in the ______ hemisphere.

Programmed cell death is called apoptosis.

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

The fast block to polyspermy involves the

Which of the following statements about fertilization is TRUE?

Briefly explain how cell differentiation relates to pattern formation an animal.

Embryonic mesoderm gives rise to

Human chorionic gonadotropin signals the placenta to produce large amounts of estrogen and progesterone.

The trophoblast secretes ____, which signals the corpus luteum that pregnancy has begun.

During capacitation, sperm become mature.

Figure 51-1 ​ ​ Which of the stages or structures in the accompanying figure was formed by the process of gastrulation?

Embryonic mesoderm forms the

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 gives rise to the spinal cord?

In amphibian development, the blastula consists of many small cells in the _ hemisphere and fewer but larger cells in the __ hemisphere.

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

Figure 51-1 Which of the stages or structures in the accompanying figure was formed by the process of gastrulation?