Question 1

What are the limitations of the amphibian skin? How do these limitations prevent them from inhabiting certain habitats?

Accepted Answer

The amphibian skin has several limitatio

Question 2

The lungs of a frog are supplied by the ______ _____,vessels derived from the sixth aortic arches.

Accepted Answer

The answer of The lungs of a frog are supplied...

Question 3

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...

Question 4

Completely terrestrial salamanders

Accepted Answer

A) have succeeded in avoiding the need for moisture. 
B) convert from the adult form back to the newt form. 
C) hold their eggs internally until they hatch. 
D) undergo paedomorphosis. 
E) undergo direct development where the larval stage is bypassed. 
A) have succeeded in avoiding the need for moisture. 
B) convert from the adult form back to the newt form. 
C) hold their eggs internally until they hatch. 
D) undergo paedomorphosis. 
E) undergo direct development where the larval stage is bypassed.

Question 5

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 6

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 7

Salamanders and newts are in the order __________.or

Accepted Answer

The answer of Salamanders and newts are in the order...

Question 8

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 9

Tetrapods originated in the ______________ period.

Accepted Answer

A) Permian 
B) Cambrian 
C) Carboniferous 
D) Devonian 
E) Silurian 
A) Permian 
B) Cambrian 
C) Carboniferous 
D) Devonian 
E) Silurian

Question 10

The evolutionary contribution of amphibians to life on land was the development of

Accepted Answer

A) the amniotic egg and shell. 
B) lungs and limbs. 
C) a watertight skin. 
D) a life cycle independent of a need for water to breed. 
E) All of the choices are amphibian "innovations". 
A) the amniotic egg and shell. 
B) lungs and limbs. 
C) a watertight skin. 
D) a life cycle independent of a need for water to breed. 
E) All of the choices are amphibian "innovations".

Question 11

What change(s)does an animal that moves from water to land have to accommodate?

Accepted Answer

A) Change in oxygen content 
B) Regulation of body temperature in a more extreme environment 
C) Wider diversity of habitats 
D) About 1000 times less buoyant density and 50 times less viscosity than water 
E) All of the choices are challenges of life out of water 
A) Change in oxygen content 
B) Regulation of body temperature in a more extreme environment 
C) Wider diversity of habitats 
D) About 1000 times less buoyant density and 50 times less viscosity than water 
E) All of the choices are challenges of life out of water

Question 12

If you used an aquarium to raise most tadpoles,what should you feed them?

Accepted Answer

A) Algae 
B) Small insects 
C) Decaying debris on bottom of pond 
D) Fish blood 
E) Small chunks of meat 
A) Algae 
B) Small insects 
C) Decaying debris on bottom of pond 
D) Fish blood 
E) Small chunks of meat

Question 13

Most salamanders are fertilized internally after a female picks up a sperm packet or ______________.

Accepted Answer

The answer of Most salamanders are fertilized internally after a...

Question 14

The Urodela

Accepted Answer

A) are hermaphroditic. 
B) are tadpoles when young. 
C) retain their tail permanently. 
D) live only in the tropics. 
E) never have to return to water to breed. 
A) are hermaphroditic. 
B) are tadpoles when young. 
C) retain their tail permanently. 
D) live only in the tropics. 
E) never have to return to water to breed.

Question 15

Moving from fish to amphibians,we see which general conversion?

Accepted Answer

A) A 3-chambered to a 4-chambered heart 
B) All-eggs-in-water to all-eggs-on-land 
C) The lateral line to senses of smell and hearing 
D) Moist skin to skin protective of water loss 
E) All of the choices are correct. 
A) A 3-chambered to a 4-chambered heart 
B) All-eggs-in-water to all-eggs-on-land 
C) The lateral line to senses of smell and hearing 
D) Moist skin to skin protective of water loss 
E) All of the choices are correct.

Question 16

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 17

Discuss the transition from an aquatic environment to a terrestrial environment.What are the structural and physiological features required for such a move?

Accepted Answer

The transition from an aquatic environme

Question 18

The Amphiumidae salamanders

Accepted Answer

A) are terrestrial throughout their lifetime. 
B) have eliminated lungs. 
C) absorb oxygen through their skin. 
D) have greatly reduced metamorphosis. 
E) All of the choices are correct. 
A) are terrestrial throughout their lifetime. 
B) have eliminated lungs. 
C) absorb oxygen through their skin. 
D) have greatly reduced metamorphosis. 
E) All of the choices are correct.

Question 19

The Anura differ from the Urodela because the Anura

Accepted Answer

A) lack a tail in the adult stage. 
B) have hind legs adapted for jumping. 
C) have a tadpole larval stage. 
D) have mostly herbivorous young. 
E) All of the choices are correct. 
A) lack a tail in the adult stage. 
B) have hind legs adapted for jumping. 
C) have a tadpole larval stage. 
D) have mostly herbivorous young. 
E) All of the choices are correct.

Question 20

Most terrestrial salamanders fertilize eggs using which method?

Accepted Answer

A) Internal fertilization after the female has picked up spermatophores deposited by the male in the environment 
B) External fertilization in the water similar to fish 
C) Internal fertilization by copulation with a male 
D) External fertilization in the water similar to frogs utilizing amplexus 
E) None of the choices is correct 
A) Internal fertilization after the female has picked up spermatophores deposited by the male in the environment 
B) External fertilization in the water similar to fish 
C) Internal fertilization by copulation with a male 
D) External fertilization in the water similar to frogs utilizing amplexus 
E) None of the choices is correct

Exam 25: Early Tetrapods and Modern Amphibians

What are the limitations of the amphibian skin? How do these limitations prevent them from inhabiting certain habitats?

The lungs of a frog are supplied by the ______ _____,vessels derived from the sixth aortic arches.

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

Completely terrestrial salamanders

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

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

Salamanders and newts are in the order __________.or

Which of the following regulates amphibian metamorphosis?

Tetrapods originated in the ______________ period.

The evolutionary contribution of amphibians to life on land was the development of

What change(s)does an animal that moves from water to land have to accommodate?

If you used an aquarium to raise most tadpoles,what should you feed them?

Most salamanders are fertilized internally after a female picks up a sperm packet or ______________.

The Urodela

Moving from fish to amphibians,we see which general conversion?

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

Discuss the transition from an aquatic environment to a terrestrial environment.What are the structural and physiological features required for such a move?

The Amphiumidae salamanders

The Anura differ from the Urodela because the Anura

Most terrestrial salamanders fertilize eggs using which method?

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

Architectual Pattern of an Animal

Taxonomy and Phylogeny of Animals

Unicellular Eukaryotes

Sponges and Placozoans

Cnidarians and Ctenophores

Acoelomorpha, Platyzoa, and Mesozoa

Polyzoa and Kryptrochozoa

Molluscs

Annelids and Allied Taxa

Smaller Ecdysozoans

Trilobites, Chelicerates, and Myriapods

Crustaceans

Hexapods

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 Distribution

Animal Ecology

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The lungs of a frog are supplied by the __ _,vessels derived from the sixth aortic arches.

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

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

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