Question 1

Successive cell divisions convert the zygote into a multi-cell embryo during

Accepted Answer

A) meiosis. 
B) parthenogenesis. 
C) embryonic induction. 
D) cleavage. 
E) invagination. 
A) meiosis. 
B) parthenogenesis. 
C) embryonic induction. 
D) cleavage. 
E) invagination.

Question 2

The blastula forms before this stage.

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Question 3

If an investigator removes the mesoderm from an embryo, the development of which of the following systems is least likely to be affected?

Accepted Answer

A) circulatory system 
B) muscle system 
C) reproductive system 
D) integumentary system 
E) excretory system 
A) circulatory system 
B) muscle system 
C) reproductive system 
D) integumentary system 
E) excretory system

Question 4

Select the correct sequence of animal developmental events.

Accepted Answer

A) fertilization >>> cleavage >>> gastrula >>> blastula 
B) fertilization >>> cleavage >>> blastula >>> gastrula 
C) fertilization >>> blastula >>> cleavage >>> gastrula 
D) fertilization >>> gastrula >>> blastula >>> cleavage 
E) fertilization >>> blastula >>> gastrula >>> cleavage 
A) fertilization >>> cleavage >>> gastrula >>> blastula 
B) fertilization >>> cleavage >>> blastula >>> gastrula 
C) fertilization >>> blastula >>> cleavage >>> gastrula 
D) fertilization >>> gastrula >>> blastula >>> cleavage 
E) fertilization >>> blastula >>> gastrula >>> cleavage

Question 5

Over the last two decades the incidence of multiple births has

Accepted Answer

A) increased in frequency by 60%. 
B) decreased in frequency by10%. 
C) remained relatively constant. 
D) decreased the number of adoptions. 
E) done none of these. 
A) increased in frequency by 60%. 
B) decreased in frequency by10%. 
C) remained relatively constant. 
D) decreased the number of adoptions. 
E) done none of these.

Question 6

In December of 1998, Nkem Chukwu of Houston, Texas, gave birth to

Accepted Answer

A) pentuplets. 
B) sextuplets. 
C) octuplets. 
D) the first human clone. 
E) none of these. 
A) pentuplets. 
B) sextuplets. 
C) octuplets. 
D) the first human clone. 
E) none of these.

Question 7

Organs gradually assume specialized functions at this stage.

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Exam 43: Animal Development

Successive cell divisions convert the zygote into a multi-cell embryo during

The blastula forms before this stage.

If an investigator removes the mesoderm from an embryo, the development of which of the following systems is least likely to be affected?

Select the correct sequence of animal developmental events.

Over the last two decades the incidence of multiple births has

In December of 1998, Nkem Chukwu of Houston, Texas, gave birth to

Organs gradually assume specialized functions at this stage.

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

A Closer Look at Cell Membranes

Ground Rules of Metabolism

Where It Startsphotosynthesis

Energy-Releasing Pathways

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Dna Structure and Function

From Dna to Protein

Controls Over Genes

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Emergence of Evolutionary Thought

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction

Plant Growth and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Behavior

Population Ecology

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters