Archive | Phylum Chordata

Difference between Stomochord and Notochord | Balanoglossus

The upcoming discussion will update you about the difference between stomochord and notochord. Difference # Stomochord: 1. The stomochord arises as an out pocketing from the roof of the embryonic gut, anteĀ­rior to the pharynx. 2. Endodermal derivative. 3. It has a narrow lumen, opening into the pharynx. 4. The wall of the lumen is composed of a single layer [...]

By |2016-07-22T08:10:10+00:00July 22, 2016|Phylum Chordata|Comments Off on Difference between Stomochord and Notochord | Balanoglossus

Phylum Hemichordata: Meaning and Classification

In this article we will discuss about the meaning and classification of phylum hemichordata. Meaning of Phylum Hemichordata: The animals with notochord constitute the Phylum Chordata. It has a major subdivision, called the Vertebrata or Craniata for possession of vertebral column or cranium. The rest of chordates, namely Hemichordata, Urochordata and Cephalochordata are collectively called the Primitive Chordates or Protochordates. [...]

By |2016-07-22T08:10:10+00:00July 22, 2016|Phylum Chordata|Comments Off on Phylum Hemichordata: Meaning and Classification

Quick Notes on Balanoglossus

In this article we will discuss about Balanoglossus:- 1. Derivation of Balanoglossus 2. Geographical Distribution of Balanoglossus 3. Habit and Habitat 4. External Structures 5. Body Wall 6. Supporting Structures 7. Locomotion 8. Coelom 9. Digestive and Respiratory Systems 10. Circulatory System 11. Excretory System 12. Nervous System 13. Reproductive System 14. Development 15. Affinities and Systematic Position. Contents: Derivation [...]

By |2016-07-22T08:10:10+00:00July 22, 2016|Phylum Chordata|Comments Off on Quick Notes on Balanoglossus
Go to Top