Body shape Symmetry Periproct Location Spines Regular Echinoids Irregular Echinoids 5 fold Advantage to burrowing?
Body shape Symmetry Periproct Location Spines Regular Echinoids Irregular Echinoids 5 fold Advantage to burrowing?
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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Question
Please complete the table
![This table compares Regular and Irregular Echinoids in terms of their Body shape, Symmetry, Periproct Location, and Spines, with an emphasis on their Advantage to burrowing.
- **Body Shape**
- Regular Echinoids: [Information Needed]
- Irregular Echinoids: [Information Needed]
- Advantage to Burrowing: [Information Needed]
- **Symmetry**
- Regular Echinoids: 5-fold symmetry
- Irregular Echinoids: [Information Needed]
- Advantage to Burrowing: [Information Needed]
- **Periproct Location**
- Regular Echinoids: [Information Needed]
- Irregular Echinoids: [Information Needed]
- Advantage to Burrowing: [Information Needed]
- **Spines**
- Regular Echinoids: [Information Needed]
- Irregular Echinoids: [Information Needed]
- Advantage to Burrowing: [Information Needed]
This comparison highlights structural and functional differences between Regular and Irregular Echinoids, focusing on features relevant to their burrowing capabilities.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F896b330c-0f31-4d4e-9300-b71637ec8079%2F09fdc7d4-1b98-4193-b844-31980c2f445c%2F2okoe6e_processed.jpeg&w=3840&q=75)
Transcribed Image Text:This table compares Regular and Irregular Echinoids in terms of their Body shape, Symmetry, Periproct Location, and Spines, with an emphasis on their Advantage to burrowing.
- **Body Shape**
- Regular Echinoids: [Information Needed]
- Irregular Echinoids: [Information Needed]
- Advantage to Burrowing: [Information Needed]
- **Symmetry**
- Regular Echinoids: 5-fold symmetry
- Irregular Echinoids: [Information Needed]
- Advantage to Burrowing: [Information Needed]
- **Periproct Location**
- Regular Echinoids: [Information Needed]
- Irregular Echinoids: [Information Needed]
- Advantage to Burrowing: [Information Needed]
- **Spines**
- Regular Echinoids: [Information Needed]
- Irregular Echinoids: [Information Needed]
- Advantage to Burrowing: [Information Needed]
This comparison highlights structural and functional differences between Regular and Irregular Echinoids, focusing on features relevant to their burrowing capabilities.
Expert Solution

Step 1
Regular Echinoids | Irregular Echinoids | Advantage to burrowing ? | |
Body shape | Globular shaped skeleton | Heart- shaped | The flattened body shape of the regular and irregular echinoids help them to burrow through the sediment. |
Symmetry | 5 fold | Bilateral symmetry | The five-fold symmetry of the regular echinoids help in burrowing. |
Periproct location | Centrally located | Located towards the posterior end | The location of periproct in both regular and irregular echinoids do not affect burrowing. |
Spines | Spines are used for locomotion as well as defence and are made up of calcite. | Spines like hairs | The presence of spines in both regular and irregular spines prove advantageous for burrowing as well as for locomotion. |
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