Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 18, Problem 6FTB
Summary Introduction
To review:
The given blank space in the statement, “the first animals to live on land were _________ because their external skeletons, also called _______ supported the animals’ weight while protecting their bodies from ________.”
Introduction:
The first land animal evolved around 430 million years ago. These animals were the first invertebrates, which thrived on land. The main reasons for their success include a hard body covering, small size, improved motility, and the absence of competition from other species.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Amphibians were the first _________, four-footed terrestrial vertebrates.
Which statement about crustaceans is true?
There are very few marine species.
They lack a carapace.
Most have six legs attached to the head.
They are the least prevalent marine arthropods today.
Most have a body that is composed of three regions: head, thorax, and abdomen.
Use the information and diagram to answer the following question.
Scientists discovered a 375-million-year-old fossil in Canada. The diagram shows the top and side views of the fossil.
Top view
Side view
Which observation would best support the claim that this organism was a transitional form between amphibians and fish?
O A. The fossil has some body structures that are analogous to amphibians and some body structures that are vestigial.
O B. The fossil is larger than most modern amphibians, but smaller than most ancient fish.
O C. The fossil was discovered near a lake, which shows that the organism needed water to reproduce, as do amphibians and fish.
O D. The fossil has some body structures that are homologous to amphibians and some body structures that are homologous to fish.
757 PM
P Type here to search
3/22/2021
BANG LOLUFSEN
insert ort sc
Delete
+ backspace
home
R
H.
pause
1 shift
C V
M
Chapter 18 Solutions
Biology: Life on Earth (11th Edition)
Ch. 18 - 1. Almost all of the oxygen gas in today’s...Ch. 18 - Extinction a. generally does not occur except...Ch. 18 - 3. In the endosymbiotic origin of the...Ch. 18 - 4. Which of the following does not list...Ch. 18 - Prob. 5MCCh. 18 - 1. Because there was no oxygen in the earliest...Ch. 18 - 2. The molecule ________ became a candidate for...Ch. 18 - 3. Complex cells that contain a nucleus and other...Ch. 18 - 4. The sperm of early land plants had to reach the...Ch. 18 - 5. Early plants that protected their seeds within...
Ch. 18 - Prob. 6FTBCh. 18 - Amphibians gave rise to ____________, which had...Ch. 18 - 1. What is the evidence that life might have...Ch. 18 - Prob. 2RQCh. 18 - 3. Explain the endosymbiont hypothesis for the...Ch. 18 - 4. Name two advantages of multicellularity for...Ch. 18 - What advantages and disadvantages would...Ch. 18 - 6. Outline the major adaptations that emerged...Ch. 18 - Outline the evolution of humans from early...Ch. 18 - Extinctions have occurred throughout the history...Ch. 18 - In biological terms, what do you think was the...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Give answer ASAP Answer the following question about an animal that has vertebrae, a cranium, but cannot closed its mouth tightly. Name the class. Group of answer choices cartilage fish reptiles amphibians jawless fish; mammals; bony fisharrow_forwardthe animal kingdom was divided into 5 main clades. Which clade has animals without true tissuesarrow_forwardWhich statement comparing these organisms is correct? O A. Both animals have a skeleton. O B. Both animals have an exoskeleton. C. The crab has a skeleton, and the human has an exoskeleton. D. The crab has an exoskeleton, and the human has a skeleton.arrow_forward
- Professor Andrew, a paleontologist discovers a transitional fossil between a stem amniote and mammal. In 150 words express on what group of animals this might have belonged to and on their major antomical features !arrow_forwardAristotle classified all large, mobile, unshelled aquatic animals without a vertebral column as: the Malacostraca the zoophytes the birds the malacia the ostracodermarrow_forwardUse the information and diagram to answer the following question. Scientists discovered a 375-million-year-old fossil in Canada. The diagram shows the top and side views of the fossil. Which observation would best support the claim that this organism was a transitional form between amphibians and fish? A. The fossil is larger than most modern amphibians, but smaller than most ancient fish. B. The fossil has some body structures that are homologous to amphibians and some body structures that are homologous to fish. C. The fossil has some body structures that are analogous to amphibians and some body structures that are vestigial. D. The fossil was discovered near a lake, which shows that the organism needed water to reproduce, as do amphibians and fish.arrow_forward
- Agnathans (Jawless FIsh) Look at the image that is attached to this question to answer the questions I have How well developed is the skeleton. Is the notochord still evident? Is the skin smooth or rough? Can you see well-developed fins? What about the eyes?arrow_forwardRead the list of vestigial structures found in humans. Then hypothesize apossible function for each structure and explain the reason why it is considered vestigial.Structure Possible Function Why is it considered vestigial?AppendixCoccyx (tailbone)Wisdom teetharrow_forwardAristotle classified all large, mobile, unshelled aquatic animals without a vertebral column as: the malacostraca the zoophytes the birds the malacia the ostracodermsarrow_forward
- The chelipeds of prawns are quite diminished in size when compared to crayfish and lobster.Hypothesize why you think these differences exist? Find some support for your hypothesis from the Internet or other scientific resource.arrow_forwardMan appealed to the laboratory in Middle Asia. He lived in village in the pise-walled house and found arthropods in the house wall chinks. These arthropods characterized with the oval oblong body with the pointed end. Their body color was dark-gray; mouth parts were located ventrally and weren't visible from the backside. The number of walking legs of animals is four pairs. What is the Latin name of this arthropod? Select one: a. Ixodes persulcatus b. Sarcoptes scabiei c. Ornithodoros papillipes d. Ixodes rinicus e. Dermacentor nuttalliarrow_forwardWalkng in the beach you see an animal with a hard shell and many jointed appendages. Determine whether the animal is a chelicerate or crustaceanarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Phylogeny and the Tree of Life; Author: Professor Dave Explains;https://www.youtube.com/watch?v=KLMn4XwS8Tw;License: Standard YouTube License, CC-BY