Question 1

In which animals is external fertilization most common?

Accepted Answer

A) in animals living on mountains 
B) in animals living in oceans 
C) in animals living in forests 
D) in animals living on prairies 
A) in animals living on mountains 
B) in animals living in oceans 
C) in animals living in forests 
D) in animals living on prairies

Question 2

Which of the following phases are included in the ovarian cycle?

Accepted Answer

A) the follicular and proliferative phases 
B) the proliferative and secretory phases 
C) the follicular and luteal phases 
D) the luteal and secretory phases 
A) the follicular and proliferative phases 
B) the proliferative and secretory phases 
C) the follicular and luteal phases 
D) the luteal and secretory phases

Question 3

Which of the following is contained in the semen?

Accepted Answer

A) a substance that raises the pH in the female reproductive tract 
B) a substance that triggers contraction of muscles in the female reproductive tract 
C) a fast-acting enzyme that breaks down the semen clot 
D) a slow-acting clotting enzyme 
A) a substance that raises the pH in the female reproductive tract 
B) a substance that triggers contraction of muscles in the female reproductive tract 
C) a fast-acting enzyme that breaks down the semen clot 
D) a slow-acting clotting enzyme

Question 4

Which mechanism involves the separation of the parent into two or more offspring of approximately the same size?

Accepted Answer

A) fertilization 
B) budding 
C) fragmentation 
D) fission 
A) fertilization 
B) budding 
C) fragmentation 
D) fission

Question 5

Identify each labelled part of the illustration.  
-urethra

Accepted Answer

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

Question 6

What is the function of gonads in humans?

Accepted Answer

A) to nourish the embryo 
B) to produce enzymes 
C) to nourish the mother 
D) to produce gametes 
A) to nourish the embryo 
B) to produce enzymes 
C) to nourish the mother 
D) to produce gametes

Question 7

Match each hormone with its correct description.
-progesterone

Accepted Answer

A) triggers ovulation 
B) stimulates Sertoli cells 
C) secreted by the developing embryo; maintains function of the corpus luteum 
D) induces contraction of the uterus 
E) stimulates growth of the endometrium
F)secreted by Sertoli cells and the corpus luteum
G)secreted by the hypothalamus
H)secreted by follicular cells
I)secreted by the corpus luteum even after it regresses later in pregnancy; blocks uterine contractions until time of birth is near
J)secreted by Leydig cells 
A) triggers ovulation 
B) stimulates Sertoli cells 
C) secreted by the developing embryo; maintains function of the corpus luteum 
D) induces contraction of the uterus 
E) stimulates growth of the endometrium
F)secreted by Sertoli cells and the corpus luteum
G)secreted by the hypothalamus
H)secreted by follicular cells
I)secreted by the corpus luteum even after it regresses later in pregnancy; blocks uterine contractions until time of birth is near
J)secreted by Leydig cells

Question 8

Match each hormone with its correct description.
-human chorionic gonadotropin (hCG)

Accepted Answer

A) triggers ovulation 
B) stimulates Sertoli cells 
C) secreted by the developing embryo; maintains function of the corpus luteum 
D) induces contraction of the uterus 
E) stimulates growth of the endometrium
F)secreted by Sertoli cells and the corpus luteum
G)secreted by the hypothalamus
H)secreted by follicular cells
I)secreted by the corpus luteum even after it regresses later in pregnancy; blocks uterine contractions until time of birth is near
J)secreted by Leydig cells 
A) triggers ovulation 
B) stimulates Sertoli cells 
C) secreted by the developing embryo; maintains function of the corpus luteum 
D) induces contraction of the uterus 
E) stimulates growth of the endometrium
F)secreted by Sertoli cells and the corpus luteum
G)secreted by the hypothalamus
H)secreted by follicular cells
I)secreted by the corpus luteum even after it regresses later in pregnancy; blocks uterine contractions until time of birth is near
J)secreted by Leydig cells

Question 9

Which of the following processes is one of sexual reproduction?

Accepted Answer

A) fission 
B) fertilization 
C) budding 
D) fragmentation 
A) fission 
B) fertilization 
C) budding 
D) fragmentation

Question 10

What cause(s) the synchronization of mass spawning events in many invertebrates?

Accepted Answer

A) the Sun 
B) the climate 
C) cryptochromes 
D) the stars 
A) the Sun 
B) the climate 
C) cryptochromes 
D) the stars

Question 11

© Science Photo Library/Alamy
-In a human male, how many total chromatids are present in the cell that is numbered 4 in the figure?

Accepted Answer

A) 2 
B) 23 
C) 46 
D) 92 
A) 2 
B) 23 
C) 46 
D) 92

Question 12

After ovulation, the remaining follicle cells develop into the corpus luteum.

Accepted Answer

A) True 
 B)False

Question 13

Match each hormone with its correct description.
-relaxin

Accepted Answer

A) triggers ovulation 
B) stimulates Sertoli cells 
C) secreted by the developing embryo; maintains function of the corpus luteum 
D) induces contraction of the uterus 
E) stimulates growth of the endometrium
F)secreted by Sertoli cells and the corpus luteum
G)secreted by the hypothalamus
H)secreted by follicular cells
I)secreted by the corpus luteum even after it regresses later in pregnancy; blocks uterine contractions until time of birth is near
J)secreted by Leydig cells 
A) triggers ovulation 
B) stimulates Sertoli cells 
C) secreted by the developing embryo; maintains function of the corpus luteum 
D) induces contraction of the uterus 
E) stimulates growth of the endometrium
F)secreted by Sertoli cells and the corpus luteum
G)secreted by the hypothalamus
H)secreted by follicular cells
I)secreted by the corpus luteum even after it regresses later in pregnancy; blocks uterine contractions until time of birth is near
J)secreted by Leydig cells

Question 14

Where are sperm produced?

Accepted Answer

A) in the seminiferous tubules 
B) in the prostate gland 
C) in the penis 
D) in the epididymis 
A) in the seminiferous tubules 
B) in the prostate gland 
C) in the penis 
D) in the epididymis

Question 15

Explain the roles of the hormones GnRH, FSH, and LH in the male and female reproductive systems.

Accepted Answer

In both males and females, gonadotropin-

Question 16

If the number of chromosomes in an animal's gametes is 20, then how many chromosomes would a somatic cell from that animal contain?

Accepted Answer

A) 10 
B) 20 
C) 40 
D) 80 
A) 10 
B) 20 
C) 40 
D) 80

Question 17

The thin flap of tissue that partially covers the opening of the vagina is called the hymen.

Accepted Answer

A) True 
 B)False

Question 18

In many mammalian species, including bats and most nonhuman primates, there is a bone in the penis, which helps maintain it in an erect state. What is it called?

Accepted Answer

A) the baculum 
B) the pendulum 
C) the colostrum 
D) the gametogonium 
A) the baculum 
B) the pendulum 
C) the colostrum 
D) the gametogonium

Question 19

Which of the following refers to the discharge that results from menstrual flow?

Accepted Answer

A) the follicle 
B) the lining of the endometrium 
C) the blood from vessels on the outer side of the uterus 
D) the corpus luteum 
A) the follicle 
B) the lining of the endometrium 
C) the blood from vessels on the outer side of the uterus 
D) the corpus luteum

Question 20

Which of the following is an advantage of sexual reproduction?

Accepted Answer

A) Individual organisms do not have to seek mates. 
B) It promotes genetic diversity. 
C) In stable environments, the offspring are as well adapted as the parents. 
D) It is less energetically costly than asexual reproduction. 
A) Individual organisms do not have to seek mates. 
B) It promotes genetic diversity. 
C) In stable environments, the offspring are as well adapted as the parents. 
D) It is less energetically costly than asexual reproduction.

Exam 41: Reproduction in Animals

In which animals is external fertilization most common?

Which of the following phases are included in the ovarian cycle?

Which of the following is contained in the semen?

Which mechanism involves the separation of the parent into two or more offspring of approximately the same size?

Identify each labelled part of the illustration. -urethra

What is the function of gonads in humans?

Match each hormone with its correct description. -progesterone

Match each hormone with its correct description. -human chorionic gonadotropin (hCG)

Which of the following processes is one of sexual reproduction?

What cause(s) the synchronization of mass spawning events in many invertebrates?

© Science Photo Library/Alamy -In a human male, how many total chromatids are present in the cell that is numbered 4 in the figure?

After ovulation, the remaining follicle cells develop into the corpus luteum.

Match each hormone with its correct description. -relaxin

Where are sperm produced?

Explain the roles of the hormones GnRH, FSH, and LH in the male and female reproductive systems.

If the number of chromosomes in an animal's gametes is 20, then how many chromosomes would a somatic cell from that animal contain?

The thin flap of tissue that partially covers the opening of the vagina is called the hymen.

In many mammalian species, including bats and most nonhuman primates, there is a bone in the penis, which helps maintain it in an erect state. What is it called?

Which of the following refers to the discharge that results from menstrual flow?

Which of the following is an advantage of sexual reproduction?

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

Animal Development

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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