Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
Related questions
Question
Q14: select all that apply (there could be more than one answer choice)
![**Question:**
Xenacoelomorpha are characterized by all of the following except:
- [ ] protonephridia
- [ ] hermaphroditism
- [ ] metanephridia
- [ ] acoelomate body organization
**Explanation:**
The question lists four characteristics and asks which one does not apply to Xenacoelomorpha. Here is a brief explanation of each term:
- **Protonephridia**: A network of dead-end tubules lacking internal openings, commonly used for excretion and osmoregulation.
- **Hermaphroditism**: An organism having both male and female reproductive organs.
- **Metanephridia**: Excretory organs found in many invertebrates, typically more complex than protonephridia.
- **Acoelomate Body Organization**: An organism without a coelom, which is a body cavity lined by mesoderm.
Consider which of these does not correctly describe the characteristics of Xenacoelomorpha.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb1751e3a-a174-44cb-807a-026103c1f5d6%2F9eadd6b6-93db-49e7-962a-7f62232b7687%2F0hm99b_processed.png&w=3840&q=75)
Transcribed Image Text:**Question:**
Xenacoelomorpha are characterized by all of the following except:
- [ ] protonephridia
- [ ] hermaphroditism
- [ ] metanephridia
- [ ] acoelomate body organization
**Explanation:**
The question lists four characteristics and asks which one does not apply to Xenacoelomorpha. Here is a brief explanation of each term:
- **Protonephridia**: A network of dead-end tubules lacking internal openings, commonly used for excretion and osmoregulation.
- **Hermaphroditism**: An organism having both male and female reproductive organs.
- **Metanephridia**: Excretory organs found in many invertebrates, typically more complex than protonephridia.
- **Acoelomate Body Organization**: An organism without a coelom, which is a body cavity lined by mesoderm.
Consider which of these does not correctly describe the characteristics of Xenacoelomorpha.
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