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Consdier the following feature-
Internal fertilization, open circulatory system, malphigian tubule, triploblastic, nephridia, organ system-
How many feature are common in annelida and arthropoda-
- a)Two
- b)Three
- c)Four
- d)One
Correct answer is option 'B'. Can you explain this answer?
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Consdier the following feature-Internal fertilization, open circulator...
Total 3 ..... internal fertilisation
..... organ systems.
...... and triploblastic.....
..... organ systems.
...... and triploblastic.....
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Consdier the following feature-Internal fertilization, open circulator...
Common Features of Annelida and Arthropoda
Annelida (segmented worms) and Arthropoda (insects, arachnids, crustaceans) share several features due to their evolutionary relationships. Let’s explore the common features that highlight their similarities and differences.
1. Triploblastic Organization
- Both annelids and arthropods are triploblastic organisms.
- This means they develop from three embryonic layers: ectoderm, mesoderm, and endoderm.
2. Organ System Level of Organization
- Annelida and Arthropoda exhibit a high level of complexity with organ systems.
- They possess specialized organ systems for digestion, circulation, and reproduction.
3. Open Circulatory System
- Both groups have an open circulatory system, although the degree of complexity varies.
- In this system, blood is not always confined to vessels and bathes the organs directly.
Distinct Features
- Internal Fertilization: Generally, this is more common in arthropods, while many annelids reproduce externally.
- Malpighian Tubules: These are specialized excretory structures found primarily in arthropods, not in annelids.
- Nephridia: Present in annelids for excretion, but not in arthropods.
Conclusion
In summary, the common features shared by Annelida and Arthropoda include triploblastic organization, organ system level of organization, and an open circulatory system. Thus, the correct answer is option 'B'—three common features.
Annelida (segmented worms) and Arthropoda (insects, arachnids, crustaceans) share several features due to their evolutionary relationships. Let’s explore the common features that highlight their similarities and differences.
1. Triploblastic Organization
- Both annelids and arthropods are triploblastic organisms.
- This means they develop from three embryonic layers: ectoderm, mesoderm, and endoderm.
2. Organ System Level of Organization
- Annelida and Arthropoda exhibit a high level of complexity with organ systems.
- They possess specialized organ systems for digestion, circulation, and reproduction.
3. Open Circulatory System
- Both groups have an open circulatory system, although the degree of complexity varies.
- In this system, blood is not always confined to vessels and bathes the organs directly.
Distinct Features
- Internal Fertilization: Generally, this is more common in arthropods, while many annelids reproduce externally.
- Malpighian Tubules: These are specialized excretory structures found primarily in arthropods, not in annelids.
- Nephridia: Present in annelids for excretion, but not in arthropods.
Conclusion
In summary, the common features shared by Annelida and Arthropoda include triploblastic organization, organ system level of organization, and an open circulatory system. Thus, the correct answer is option 'B'—three common features.
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