Question 1

Adaptations for terrestrialism in early tetrapods resulted in an air-filled cavity along with

Accepted Answer

A)  mucous membrane-lined nostrils. 
B)  a complex nervous system. 
C)  internal embryo gestation. 
D)  an abdominal cavity. 
E)  double circulation. 
A)  mucous membrane-lined nostrils. 
B)  a complex nervous system. 
C)  internal embryo gestation. 
D)  an abdominal cavity. 
E)  double circulation.

Question 2

A specialized structure in the conus arteriosus of the frog heart,called the ______ ______,is thought to maintain selective distribution of oxygenated and unoxygenated blood.

Accepted Answer

The answer of A specialized structure in the conus arteriosus...

Question 3

The earliest tetrapod fossils show that they possessed a basic pattern of _________ digits per limb.

Accepted Answer

A)  three 
B)  four 
C)  five 
D)  more than five 
E)  more than ten 
A)  three 
B)  four 
C)  five 
D)  more than five 
E)  more than ten

Question 4

Frog singing

Accepted Answer

A)  is more common in males than females. 
B)  is produced by passing air back and forth between the lungs and vocal pouches. 
C)  uses the large vocal sacs as resonators. 
D)  involves vocal cords in a larynx. 
E)  All of the choices are correct. 
A)  is more common in males than females. 
B)  is produced by passing air back and forth between the lungs and vocal pouches. 
C)  uses the large vocal sacs as resonators. 
D)  involves vocal cords in a larynx. 
E)  All of the choices are correct.

Question 5

Which of the following is NOT a correct association of amphibian pigment cells?

Accepted Answer

A)  Xanthophores-orange, yellow, and red pigment 
B)  Chromatophores-on the top of the epidermis 
C)  Melanophores-brown or black pigment 
D)  Iridophores-silvery light-reflecting pigment 
E)  All of the choices are correct associations 
A)  Xanthophores-orange, yellow, and red pigment 
B)  Chromatophores-on the top of the epidermis 
C)  Melanophores-brown or black pigment 
D)  Iridophores-silvery light-reflecting pigment 
E)  All of the choices are correct associations

Question 6

Which of the following regulates amphibian metamorphosis?

Accepted Answer

A)  Calcitonin hormone from the adrenals 
B)  Thyroxine, a hormone secreted by the thyroid gland 
C)  Estrogen and testosterone from the gonads 
D)  Growth hormone by the thyroid gland 
E)  Salt levels from the environment 
A)  Calcitonin hormone from the adrenals 
B)  Thyroxine, a hormone secreted by the thyroid gland 
C)  Estrogen and testosterone from the gonads 
D)  Growth hormone by the thyroid gland 
E)  Salt levels from the environment

Question 7

Most of our familiar frogs belong to which large family?

Accepted Answer

A)  Hylidae 
B)  Bufonidae 
C)  Ranidae 
D)  Plethodontidae 
E)  Anuridae 
A)  Hylidae 
B)  Bufonidae 
C)  Ranidae 
D)  Plethodontidae 
E)  Anuridae

Question 8

What is the significance of paedomorphosis in the evolution of tetrapods?

Accepted Answer

Paedomorphosis, the retention of juvenil

Question 9

What was the 350 million-year-old fossil called Ichthyostega?

Accepted Answer

A)  A lobe-finned fish that represents the likely ancestor to the amphibians 
B)  One of the earliest known tetrapods 
C)  A lizard-like stem reptile 
D)  A ray-finned fish that gave rise to the amphibians 
E)  The first fish-to-amphibian transitional form to have lost fin rays and gill bones, thus committing itself to a land existence 
A)  A lobe-finned fish that represents the likely ancestor to the amphibians 
B)  One of the earliest known tetrapods 
C)  A lizard-like stem reptile 
D)  A ray-finned fish that gave rise to the amphibians 
E)  The first fish-to-amphibian transitional form to have lost fin rays and gill bones, thus committing itself to a land existence

Question 10

Why have amphibians never become independent of water,or at least a moist environment,and in most cases have a fully aquatic stage?

Accepted Answer

Amphibians, which include frogs, toads,

Question 11

Describe five factors likely leading to the worldwide decline in amphibians.

Accepted Answer

1. Habitat loss: Destruction and fragmen

Question 12

Tropical,burrowing,limbless amphibians belong to the order _______ or (alternate order name)________.

Accepted Answer

The answer of Tropical,burrowing,limbless amphibians belong to the order _______...

Question 13

When a salamander retains juvenile features while it matures into an adult,what is the process called?

Accepted Answer

A)  Precociousness 
B)  Spontaneous regeneration 
C)  Senescence 
D)  Prematurity 
E)  Paedomorphosis 
A)  Precociousness 
B)  Spontaneous regeneration 
C)  Senescence 
D)  Prematurity 
E)  Paedomorphosis

Question 14

The sequence of Eusthenopteron,Acanthostega,and Ichthyostega fossils show a progression in which of these?

Accepted Answer

A)  Lung development 
B)  Egg-shell development 
C)  Loss of tail and gills 
D)  Leg development 
E)  All of the choices developed together. 
A)  Lung development 
B)  Egg-shell development 
C)  Loss of tail and gills 
D)  Leg development 
E)  All of the choices developed together.

Question 15

In addition to the sinus venosus and the conus arteriosus the heart of a frog has two __________ and one __________.

Accepted Answer

The answer of In addition to the sinus venosus and...

Exam 25: Early Tetrapods and Modern Amphibians

Adaptations for terrestrialism in early tetrapods resulted in an air-filled cavity along with

A specialized structure in the conus arteriosus of the frog heart,called the ______ ______,is thought to maintain selective distribution of oxygenated and unoxygenated blood.

The earliest tetrapod fossils show that they possessed a basic pattern of _________ digits per limb.

Frog singing

Which of the following is NOT a correct association of amphibian pigment cells?

Which of the following regulates amphibian metamorphosis?

Most of our familiar frogs belong to which large family?

What is the significance of paedomorphosis in the evolution of tetrapods?

What was the 350 million-year-old fossil called Ichthyostega?

Why have amphibians never become independent of water,or at least a moist environment,and in most cases have a fully aquatic stage?

Describe five factors likely leading to the worldwide decline in amphibians.

Tropical,burrowing,limbless amphibians belong to the order _______ or (alternate order name)________.

When a salamander retains juvenile features while it matures into an adult,what is the process called?

The sequence of Eusthenopteron,Acanthostega,and Ichthyostega fossils show a progression in which of these?

In addition to the sinus venosus and the conus arteriosus the heart of a frog has two __________ and one __________.

Life: Biological Principles and the Science of Zoology

The Origin and Chemistry of Life

Cells As Units of Life

Cellular Metabolism

Genetics: a Review

Organic Evolution

The Reproductive Process

Principles of Development

Architectural Pattern of an Animal

Taxonomy and Phylogeny of Animals

Unicellular Eukaryotes

Sponges and Placozoans

Radiate Animals

Acoelomorpha,Platyzoa,and Mesozoa

Polyzoa and Kryptrochozoa

Molluscs

Annelids and Allied Taxa

Smaller Ecdysozoans

Trilobites, Chelicerates, and Myriapods

Crustaceans

Support, Protection, and Movement

Chaetognaths, Echinoderms, and Hemichordates

Chordates

Fishes

Amniote Origins and Nonavian Reptiles

Birds

Mammals

Support, protection, and Movement

Homeostasis: Osmotic Regulation, Excretion, and Temperature Regulation

Homeostasis: Internal Fluids and Respiration

Digestion and Nutrition

Nervous Coordination: Nervous System and Sense Organs

Chemical Coordination: Endocrine System

Immunity

Animal Behavior

Animal Distributions

Animal Ecology

Filters

A specialized structure in the conus arteriosus of the frog heart,called the ,is thought to maintain selective distribution of oxygenated and unoxygenated blood.

Tropical,burrowing,limbless amphibians belong to the order _ or (alternate order name)__.

In addition to the sinus venosus and the conus arteriosus the heart of a frog has two and one .