Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
12th Edition
ISBN: 9780135755785
Author: Gerald Audesirk, Teresa Audesirk
Publisher: PEARSON+
bartleby

Concept explainers

Question
Book Icon
Chapter 24, Problem 1MC
Summary Introduction

Introduction:

The department of the animals under the principal taxonomical classification, which comes between the Kingdom and Class, is Phylum. There are near about ten major phyla in kingdom Animalia.

Expert Solution & Answer
Check Mark

Answer to Problem 1MC

Correct answer:

The organisms in the phylum “Cnidaria” are radially symmetrical. Therefore, option (b) is correct.

Option (b) is given as “cnidarians”.

Explanation of Solution

Justify reasons for the correct statement:

The cnidarians are mostly marine animals but some also live in freshwater habitats. The characteristic feature of cnidarians is cnidoblasts “specialized cells” used for catching of prey. Some of the cnidarians are sea anemones and jellyfishes. These animals if divided along a central axis then the subparts will be equal to each other and this type of symmetry is “radial symmetry”.

Hence, option (b) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “arthropods”. The arthropods are bilateral symmetrical because they can be divided into two equal halves when cutting from the medial line. Hence, it is a wrong answer.

Option (c) is given as “mollusks”. The mollusks are bilateral symmetrical because they can be divided into two equal halves when cutting from the medial line. Hence, it is a wrong answer.

Option (d) is given as “roundworms”. The roundworms are bilateral symmetrical because they can be divided into two equal halves when cutting from the medial line. Hence, it is a wrong answer.

Hence, options (a), (c), and (d) are incorrect.

Conclusion

The radial symmetry is exhibited in cnidarians.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
How do the muscles on the foot work to balance on an ice skate, specifically the triangle of balance and how does it change when balancing on an ice skate? (Refer to anatomy, be specific)
Which of the following is NOT an example of passive immunization? A. Administration of tetanus toxoid B. Administration of hepatitis B immunoglobulin C. Administration of rabies immunoglobulin D. Transfer of antibodies via plasma therapy
Transcription and Translation 1. What is the main function of transcription and translation? (2 marks) 2. How is transcription different in eukaryotic and prokaryotic cells? (2 marks) 3. Explain the difference between pre-mRNA and post-transcript mRNA. (2 marks) 4. What is the function of the following: (4 marks) i. the cap ii. spliceosome iii. Poly A tail iv. termination sequence 5. What are advantages to the wobble feature of the genetic code? (2 marks) 6. Explain the difference between the: (3 marks) i. A site & P site ii. codon & anticodon iii. gene expression and gene regulation 7. Explain how the stop codon allows for termination. (1 mark) 8. In your own words, summarize the process of translation. (2 marks)

Chapter 24 Solutions

Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)

Knowledge Booster
Background pattern image
Biology
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
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Biology
ISBN:9781305967359
Author:STARR
Publisher:CENGAGE L
Text book image
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Text book image
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Text book image
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Text book image
Aquaculture Science
Biology
ISBN:9781133558347
Author:Parker
Publisher:Cengage
Text book image
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax