Archive | Phylum Chaetognatha

Sagitta: An Example of Phylum Chaetognatha

In this article we will discuss about Sagitta:- 1. Habit and Habitat of Sagitta 2. External Structures of Sagitta 3. Body Wall 4. Coelom 5. Digestive System 6. Circulatory, Respiratory and Excretory Systems 7. Nervous System 8. Reproductive System 9. Development. Habit and Habitat of Sagitta: Sagitta is a marine planktonic animal which lives throughout the world. It can swim [...]

By |2016-05-27T11:31:31+00:00May 27, 2016|Phylum Chaetognatha|Comments Off on Sagitta: An Example of Phylum Chaetognatha
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Phylum Chaetognatha: History, Features and Affinities

In this article we will discuss about Phylum Chaetognatha:- 1. History of Phylum Chaetognatha 2. Features of Phylum Chaetognatha 3. Affinities. History of Phylum Chaetognatha: 1. Slabber, in the year 1769, was the first worker to record Sagitta and he placed it in the order Intestina under phy­lum Vermis. 2. Since then extensive works on various aspects of Sagitta have [...]

By |2016-05-27T11:31:15+00:00May 27, 2016|Phylum Chaetognatha|Comments Off on Phylum Chaetognatha: History, Features and Affinities
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