Podcast Beta
Questions and Answers
Which characteristic is true for Phylum Annelida?
How does respiration generally take place in Phylum Annelida?
What is the composition of the circulatory system in Phylum Annelida?
What is the structure of the nervous system in Phylum Annelida?
Signup and view all the answers
What is the mode of reproduction in Phylum Annelida?
Signup and view all the answers
What type of symmetry do animals in Phylum Annelida exhibit?
Signup and view all the answers
How is the musculature generally represented in animals of Phylum Annelida?
Signup and view all the answers
What is the composition of the body space between the body wall and alimentary canal in animals of Phylum Annelida?
Signup and view all the answers
How does respiration generally take place in aquatic forms of Phylum Annelida?
Signup and view all the answers
What is the mode of reproduction for animals in Phylum Annelida?
Signup and view all the answers
What type of symmetry do animals in Phylum Annelida exhibit?
Signup and view all the answers
How is the circulatory system generally characterized in animals of Phylum Annelida?
Signup and view all the answers
What is the mode of respiration generally observed in aquatic forms of Phylum Annelida?
Signup and view all the answers
What is the composition of the body space between the body wall and alimentary canal in animals of Phylum Annelida?
Signup and view all the answers
What is the general composition of the musculature in animals of Phylum Annelida?
Signup and view all the answers
Study Notes
Characteristics of Phylum Annelida
- Segmented body plan divided into metameres (segments), allowing for greater mobility and specialization.
- Bilateral symmetry is present, facilitating directional movement and organization of body structure.
Respiration in Phylum Annelida
- Generally occurs through the skin (cutaneous respiration) with oxygen absorption directly from the surrounding environment.
- Aquatic species often utilize gills for efficient gas exchange in water, enhancing respiration.
Circulatory System of Phylum Annelida
- Characterized by a closed circulatory system, where blood is contained within vessels, ensuring efficient transport of nutrients and oxygen.
- Presence of multiple hearts (aortic arches) in some species, which help in pumping blood throughout the body.
Nervous System Structure in Phylum Annelida
- Composed of a ventral nerve cord with segmental ganglia, which coordinate movement and sensory information.
- Cerebral ganglia function as a primitive brain, integrating sensory input and regulating behavior.
Reproduction in Phylum Annelida
- Asexual reproduction occurs through fragmentation in some species; most reproduce sexually with distinct male and female individuals.
- Some species are hermaphroditic, possessing both male and female reproductive organs, facilitating reproduction.
Musculature in Phylum Annelida
- Composed of circular and longitudinal muscle layers, allowing for coordinated movement and locomotion through contraction and relaxation.
- The musculature aids in burrowing and swimming, adapting to different environments.
Body Cavity Composition in Phylum Annelida
- Coelom is the body space between the body wall and alimentary canal, providing a hydrostatic skeleton for support and movement.
- The coelom is filled with coelomic fluid, allowing for better distribution of nutrients and waste products.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge about the phylum Annelida, which includes bilaterally symmetrical, triploblastic worms with clearly segmented bodies and minute rod-like chitinous setae appendages. Learn about the general characteristics of Annelida and their classification within the animal kingdom.
